Home / 39,630.16-54,689.67-21,725.82

Finding the Fourth Proportional to 39,630.16, 54,689.67 and 21,725.82

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Solution

The fourth proportional to 39,630.16, 54,689.67 and 21,725.82 is: 29,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.16 : 54,689.67 = 21,725.82 : x
  2. Step 2: Convert to fraction form
    39,630.16/54,689.67 = 21,725.82/x
  3. Step 3: Cross multiply
    39,630.16x = 54,689.67 × 21,725.82
  4. Step 4: Simplify right side
    39,630.16x = 1,188,177,926.28
  5. Step 5: Solve for x
    x = 1,188,177,926.28/39,630.16
  6. Step 6: Final answer
    x = 29,981.66

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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.