Home / 28,432.59-42,657.99-13,642.68

Finding the Fourth Proportional to 28,432.59, 42,657.99 and 13,642.68

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Solution

The fourth proportional to 28,432.59, 42,657.99 and 13,642.68 is: 20,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.59 : 42,657.99 = 13,642.68 : x
  2. Step 2: Convert to fraction form
    28,432.59/42,657.99 = 13,642.68/x
  3. Step 3: Cross multiply
    28,432.59x = 42,657.99 × 13,642.68
  4. Step 4: Simplify right side
    28,432.59x = 581,969,307.01
  5. Step 5: Solve for x
    x = 581,969,307.01/28,432.59
  6. Step 6: Final answer
    x = 20,468.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.