Home / 38,613.12-57,915.96-12,313.20

Finding the Fourth Proportional to 38,613.12, 57,915.96 and 12,313.20

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Solution

The fourth proportional to 38,613.12, 57,915.96 and 12,313.20 is: 18,468.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,613.12 : 57,915.96 = 12,313.20 : x
  2. Step 2: Convert to fraction form
    38,613.12/57,915.96 = 12,313.20/x
  3. Step 3: Cross multiply
    38,613.12x = 57,915.96 × 12,313.20
  4. Step 4: Simplify right side
    38,613.12x = 713,130,798.67
  5. Step 5: Solve for x
    x = 713,130,798.67/38,613.12
  6. Step 6: Final answer
    x = 18,468.61

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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.