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Finding the Fourth Proportional to 16,391.80, 24,581.70 and 5,301.40

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Solution

The fourth proportional to 16,391.80, 24,581.70 and 5,301.40 is: 7,950.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,391.80 : 24,581.70 = 5,301.40 : x
  2. Step 2: Convert to fraction form
    16,391.80/24,581.70 = 5,301.40/x
  3. Step 3: Cross multiply
    16,391.80x = 24,581.70 × 5,301.40
  4. Step 4: Simplify right side
    16,391.80x = 130,317,424.38
  5. Step 5: Solve for x
    x = 130,317,424.38/16,391.80
  6. Step 6: Final answer
    x = 7,950.16

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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.