Home / 21,340.62-29,462.67-15,387.66

Finding the Fourth Proportional to 21,340.62, 29,462.67 and 15,387.66

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Solution

The fourth proportional to 21,340.62, 29,462.67 and 15,387.66 is: 21,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.62 : 29,462.67 = 15,387.66 : x
  2. Step 2: Convert to fraction form
    21,340.62/29,462.67 = 15,387.66/x
  3. Step 3: Cross multiply
    21,340.62x = 29,462.67 × 15,387.66
  4. Step 4: Simplify right side
    21,340.62x = 453,361,548.65
  5. Step 5: Solve for x
    x = 453,361,548.65/21,340.62
  6. Step 6: Final answer
    x = 21,244.07

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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.