Home / 15,424.02-21,285.18-9,136.80

Finding the Fourth Proportional to 15,424.02, 21,285.18 and 9,136.80

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Solution

The fourth proportional to 15,424.02, 21,285.18 and 9,136.80 is: 12,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.02 : 21,285.18 = 9,136.80 : x
  2. Step 2: Convert to fraction form
    15,424.02/21,285.18 = 9,136.80/x
  3. Step 3: Cross multiply
    15,424.02x = 21,285.18 × 9,136.80
  4. Step 4: Simplify right side
    15,424.02x = 194,478,432.62
  5. Step 5: Solve for x
    x = 194,478,432.62/15,424.02
  6. Step 6: Final answer
    x = 12,608.80

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Double scale
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Similar ratio
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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.