Home / 15,314.39-21,136.17-9,349.53

Finding the Fourth Proportional to 15,314.39, 21,136.17 and 9,349.53

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Solution

The fourth proportional to 15,314.39, 21,136.17 and 9,349.53 is: 12,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.39 : 21,136.17 = 9,349.53 : x
  2. Step 2: Convert to fraction form
    15,314.39/21,136.17 = 9,349.53/x
  3. Step 3: Cross multiply
    15,314.39x = 21,136.17 × 9,349.53
  4. Step 4: Simplify right side
    15,314.39x = 197,613,255.50
  5. Step 5: Solve for x
    x = 197,613,255.50/15,314.39
  6. Step 6: Final answer
    x = 12,903.76

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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.