Home / 15,516.29-21,412.94-8,443.17

Finding the Fourth Proportional to 15,516.29, 21,412.94 and 8,443.17

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Solution

The fourth proportional to 15,516.29, 21,412.94 and 8,443.17 is: 11,651.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.29 : 21,412.94 = 8,443.17 : x
  2. Step 2: Convert to fraction form
    15,516.29/21,412.94 = 8,443.17/x
  3. Step 3: Cross multiply
    15,516.29x = 21,412.94 × 8,443.17
  4. Step 4: Simplify right side
    15,516.29x = 180,793,050.40
  5. Step 5: Solve for x
    x = 180,793,050.40/15,516.29
  6. Step 6: Final answer
    x = 11,651.82

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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.