Home / 21,275.52-29,377.44-13,725.60

Finding the Fourth Proportional to 21,275.52, 29,377.44 and 13,725.60

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Solution

The fourth proportional to 21,275.52, 29,377.44 and 13,725.60 is: 18,952.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.52 : 29,377.44 = 13,725.60 : x
  2. Step 2: Convert to fraction form
    21,275.52/29,377.44 = 13,725.60/x
  3. Step 3: Cross multiply
    21,275.52x = 29,377.44 × 13,725.60
  4. Step 4: Simplify right side
    21,275.52x = 403,222,990.46
  5. Step 5: Solve for x
    x = 403,222,990.46/21,275.52
  6. Step 6: Final answer
    x = 18,952.44

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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.