Home / 12,937.16-19,387.20-7,379

Finding the Fourth Proportional to 12,937.16, 19,387.20 and 7,379

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Solution

The fourth proportional to 12,937.16, 19,387.20 and 7,379 is: 11,057.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.16 : 19,387.20 = 7,379 : x
  2. Step 2: Convert to fraction form
    12,937.16/19,387.20 = 7,379/x
  3. Step 3: Cross multiply
    12,937.16x = 19,387.20 × 7,379
  4. Step 4: Simplify right side
    12,937.16x = 143,058,148.80
  5. Step 5: Solve for x
    x = 143,058,148.80/12,937.16
  6. Step 6: Final answer
    x = 11,057.93

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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.