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Finding the Fourth Proportional to 37,671.75, 51,987.15 and 20,904.75

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Solution

The fourth proportional to 37,671.75, 51,987.15 and 20,904.75 is: 28,848.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,671.75 : 51,987.15 = 20,904.75 : x
  2. Step 2: Convert to fraction form
    37,671.75/51,987.15 = 20,904.75/x
  3. Step 3: Cross multiply
    37,671.75x = 51,987.15 × 20,904.75
  4. Step 4: Simplify right side
    37,671.75x = 1,086,778,373.96
  5. Step 5: Solve for x
    x = 1,086,778,373.96/37,671.75
  6. Step 6: Final answer
    x = 28,848.63

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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.