Home / 19,937.09-29,916.07-12,915.29

Finding the Fourth Proportional to 19,937.09, 29,916.07 and 12,915.29

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Solution

The fourth proportional to 19,937.09, 29,916.07 and 12,915.29 is: 19,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.09 : 29,916.07 = 12,915.29 : x
  2. Step 2: Convert to fraction form
    19,937.09/29,916.07 = 12,915.29/x
  3. Step 3: Cross multiply
    19,937.09x = 29,916.07 × 12,915.29
  4. Step 4: Simplify right side
    19,937.09x = 386,374,762.21
  5. Step 5: Solve for x
    x = 386,374,762.21/19,937.09
  6. Step 6: Final answer
    x = 19,379.69

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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.