Home / 21,531.17-29,727.50-19,255.43

Finding the Fourth Proportional to 21,531.17, 29,727.50 and 19,255.43

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Solution

The fourth proportional to 21,531.17, 29,727.50 and 19,255.43 is: 26,585.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.17 : 29,727.50 = 19,255.43 : x
  2. Step 2: Convert to fraction form
    21,531.17/29,727.50 = 19,255.43/x
  3. Step 3: Cross multiply
    21,531.17x = 29,727.50 × 19,255.43
  4. Step 4: Simplify right side
    21,531.17x = 572,415,917.78
  5. Step 5: Solve for x
    x = 572,415,917.78/21,531.17
  6. Step 6: Final answer
    x = 26,585.46

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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.