Home / 25,769.16-38,829.24-21,191.70

Finding the Fourth Proportional to 25,769.16, 38,829.24 and 21,191.70

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Solution

The fourth proportional to 25,769.16, 38,829.24 and 21,191.70 is: 31,931.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,769.16 : 38,829.24 = 21,191.70 : x
  2. Step 2: Convert to fraction form
    25,769.16/38,829.24 = 21,191.70/x
  3. Step 3: Cross multiply
    25,769.16x = 38,829.24 × 21,191.70
  4. Step 4: Simplify right side
    25,769.16x = 822,857,605.31
  5. Step 5: Solve for x
    x = 822,857,605.31/25,769.16
  6. Step 6: Final answer
    x = 31,931.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.