Home / 28,018.38-42,017.10-9,294.92

Finding the Fourth Proportional to 28,018.38, 42,017.10 and 9,294.92

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Solution

The fourth proportional to 28,018.38, 42,017.10 and 9,294.92 is: 13,938.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.38 : 42,017.10 = 9,294.92 : x
  2. Step 2: Convert to fraction form
    28,018.38/42,017.10 = 9,294.92/x
  3. Step 3: Cross multiply
    28,018.38x = 42,017.10 × 9,294.92
  4. Step 4: Simplify right side
    28,018.38x = 390,545,583.13
  5. Step 5: Solve for x
    x = 390,545,583.13/28,018.38
  6. Step 6: Final answer
    x = 13,938.91

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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.