Home / 28,397.92-39,189.12-15,651.10

Finding the Fourth Proportional to 28,397.92, 39,189.12 and 15,651.10

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Solution

The fourth proportional to 28,397.92, 39,189.12 and 15,651.10 is: 21,598.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.92 : 39,189.12 = 15,651.10 : x
  2. Step 2: Convert to fraction form
    28,397.92/39,189.12 = 15,651.10/x
  3. Step 3: Cross multiply
    28,397.92x = 39,189.12 × 15,651.10
  4. Step 4: Simplify right side
    28,397.92x = 613,352,836.03
  5. Step 5: Solve for x
    x = 613,352,836.03/28,397.92
  6. Step 6: Final answer
    x = 21,598.52

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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.