Home / 38,909.64-53,689.92-21,911.04

Finding the Fourth Proportional to 38,909.64, 53,689.92 and 21,911.04

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Solution

The fourth proportional to 38,909.64, 53,689.92 and 21,911.04 is: 30,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,909.64 : 53,689.92 = 21,911.04 : x
  2. Step 2: Convert to fraction form
    38,909.64/53,689.92 = 21,911.04/x
  3. Step 3: Cross multiply
    38,909.64x = 53,689.92 × 21,911.04
  4. Step 4: Simplify right side
    38,909.64x = 1,176,401,984.72
  5. Step 5: Solve for x
    x = 1,176,401,984.72/38,909.64
  6. Step 6: Final answer
    x = 30,234.20

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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.