Home / 19,187.87-28,740.14-9,306.38

Finding the Fourth Proportional to 19,187.87, 28,740.14 and 9,306.38

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Solution

The fourth proportional to 19,187.87, 28,740.14 and 9,306.38 is: 13,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.87 : 28,740.14 = 9,306.38 : x
  2. Step 2: Convert to fraction form
    19,187.87/28,740.14 = 9,306.38/x
  3. Step 3: Cross multiply
    19,187.87x = 28,740.14 × 9,306.38
  4. Step 4: Simplify right side
    19,187.87x = 267,466,473.86
  5. Step 5: Solve for x
    x = 267,466,473.86/19,187.87
  6. Step 6: Final answer
    x = 13,939.36

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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.