Home / 38,431.14-57,646.80-12,136.20

Finding the Fourth Proportional to 38,431.14, 57,646.80 and 12,136.20

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Solution

The fourth proportional to 38,431.14, 57,646.80 and 12,136.20 is: 18,204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.14 : 57,646.80 = 12,136.20 : x
  2. Step 2: Convert to fraction form
    38,431.14/57,646.80 = 12,136.20/x
  3. Step 3: Cross multiply
    38,431.14x = 57,646.80 × 12,136.20
  4. Step 4: Simplify right side
    38,431.14x = 699,613,094.16
  5. Step 5: Solve for x
    x = 699,613,094.16/38,431.14
  6. Step 6: Final answer
    x = 18,204.33

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1.5x scale

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.