Home / 21,295.86-29,387.61-13,342.38

Finding the Fourth Proportional to 21,295.86, 29,387.61 and 13,342.38

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Solution

The fourth proportional to 21,295.86, 29,387.61 and 13,342.38 is: 18,412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.86 : 29,387.61 = 13,342.38 : x
  2. Step 2: Convert to fraction form
    21,295.86/29,387.61 = 13,342.38/x
  3. Step 3: Cross multiply
    21,295.86x = 29,387.61 × 13,342.38
  4. Step 4: Simplify right side
    21,295.86x = 392,100,659.91
  5. Step 5: Solve for x
    x = 392,100,659.91/21,295.86
  6. Step 6: Final answer
    x = 18,412.06

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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.