Home / 15,136.74-20,889.18-8,331.03

Finding the Fourth Proportional to 15,136.74, 20,889.18 and 8,331.03

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Solution

The fourth proportional to 15,136.74, 20,889.18 and 8,331.03 is: 11,497.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,136.74 : 20,889.18 = 8,331.03 : x
  2. Step 2: Convert to fraction form
    15,136.74/20,889.18 = 8,331.03/x
  3. Step 3: Cross multiply
    15,136.74x = 20,889.18 × 8,331.03
  4. Step 4: Simplify right side
    15,136.74x = 174,028,385.26
  5. Step 5: Solve for x
    x = 174,028,385.26/15,136.74
  6. Step 6: Final answer
    x = 11,497.08

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Double scale
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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.