Home / 38,151.72-52,650.18-21,390.12

Finding the Fourth Proportional to 38,151.72, 52,650.18 and 21,390.12

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Solution

The fourth proportional to 38,151.72, 52,650.18 and 21,390.12 is: 29,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,151.72 : 52,650.18 = 21,390.12 : x
  2. Step 2: Convert to fraction form
    38,151.72/52,650.18 = 21,390.12/x
  3. Step 3: Cross multiply
    38,151.72x = 52,650.18 × 21,390.12
  4. Step 4: Simplify right side
    38,151.72x = 1,126,193,668.22
  5. Step 5: Solve for x
    x = 1,126,193,668.22/38,151.72
  6. Step 6: Final answer
    x = 29,518.82

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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.