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Finding the Fourth Proportional to 37,667.20, 51,980.76 and 20,900.20

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Solution

The fourth proportional to 37,667.20, 51,980.76 and 20,900.20 is: 28,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,667.20 : 51,980.76 = 20,900.20 : x
  2. Step 2: Convert to fraction form
    37,667.20/51,980.76 = 20,900.20/x
  3. Step 3: Cross multiply
    37,667.20x = 51,980.76 × 20,900.20
  4. Step 4: Simplify right side
    37,667.20x = 1,086,408,280.15
  5. Step 5: Solve for x
    x = 1,086,408,280.15/37,667.20
  6. Step 6: Final answer
    x = 28,842.29

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.