Home / 12,916.92-19,385.16-5,126.40

Finding the Fourth Proportional to 12,916.92, 19,385.16 and 5,126.40

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Solution

The fourth proportional to 12,916.92, 19,385.16 and 5,126.40 is: 7,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.92 : 19,385.16 = 5,126.40 : x
  2. Step 2: Convert to fraction form
    12,916.92/19,385.16 = 5,126.40/x
  3. Step 3: Cross multiply
    12,916.92x = 19,385.16 × 5,126.40
  4. Step 4: Simplify right side
    12,916.92x = 99,376,084.22
  5. Step 5: Solve for x
    x = 99,376,084.22/12,916.92
  6. Step 6: Final answer
    x = 7,693.48

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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.