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Finding the Fourth Proportional to 28,534, 39,377.06 and 15,958.75

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Solution

The fourth proportional to 28,534, 39,377.06 and 15,958.75 is: 22,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534 : 39,377.06 = 15,958.75 : x
  2. Step 2: Convert to fraction form
    28,534/39,377.06 = 15,958.75/x
  3. Step 3: Cross multiply
    28,534x = 39,377.06 × 15,958.75
  4. Step 4: Simplify right side
    28,534x = 628,408,656.28
  5. Step 5: Solve for x
    x = 628,408,656.28/28,534
  6. Step 6: Final answer
    x = 22,023.15

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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.