Home / 28,428.60-42,642.90-15,287.16

Finding the Fourth Proportional to 28,428.60, 42,642.90 and 15,287.16

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Solution

The fourth proportional to 28,428.60, 42,642.90 and 15,287.16 is: 22,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.60 : 42,642.90 = 15,287.16 : x
  2. Step 2: Convert to fraction form
    28,428.60/42,642.90 = 15,287.16/x
  3. Step 3: Cross multiply
    28,428.60x = 42,642.90 × 15,287.16
  4. Step 4: Simplify right side
    28,428.60x = 651,888,835.16
  5. Step 5: Solve for x
    x = 651,888,835.16/28,428.60
  6. Step 6: Final answer
    x = 22,930.74

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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.