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Finding the Fourth Proportional to 15,136.80, 22,699.80 and 6,248.40

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Solution

The fourth proportional to 15,136.80, 22,699.80 and 6,248.40 is: 9,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,136.80 : 22,699.80 = 6,248.40 : x
  2. Step 2: Convert to fraction form
    15,136.80/22,699.80 = 6,248.40/x
  3. Step 3: Cross multiply
    15,136.80x = 22,699.80 × 6,248.40
  4. Step 4: Simplify right side
    15,136.80x = 141,837,430.32
  5. Step 5: Solve for x
    x = 141,837,430.32/15,136.80
  6. Step 6: Final answer
    x = 9,370.37

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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.