Home / 15,314.20-21,136.89-9,344.59

Finding the Fourth Proportional to 15,314.20, 21,136.89 and 9,344.59

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Solution

The fourth proportional to 15,314.20, 21,136.89 and 9,344.59 is: 12,897.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.20 : 21,136.89 = 9,344.59 : x
  2. Step 2: Convert to fraction form
    15,314.20/21,136.89 = 9,344.59/x
  3. Step 3: Cross multiply
    15,314.20x = 21,136.89 × 9,344.59
  4. Step 4: Simplify right side
    15,314.20x = 197,515,570.93
  5. Step 5: Solve for x
    x = 197,515,570.93/15,314.20
  6. Step 6: Final answer
    x = 12,897.54

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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.