Home / 20,636.17-28,475.20-13,069.15

Finding the Fourth Proportional to 20,636.17, 28,475.20 and 13,069.15

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Solution

The fourth proportional to 20,636.17, 28,475.20 and 13,069.15 is: 18,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.17 : 28,475.20 = 13,069.15 : x
  2. Step 2: Convert to fraction form
    20,636.17/28,475.20 = 13,069.15/x
  3. Step 3: Cross multiply
    20,636.17x = 28,475.20 × 13,069.15
  4. Step 4: Simplify right side
    20,636.17x = 372,146,531.71
  5. Step 5: Solve for x
    x = 372,146,531.71/20,636.17
  6. Step 6: Final answer
    x = 18,033.70

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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.