Home / 21,250.86-29,308.74-18,862.58

Finding the Fourth Proportional to 21,250.86, 29,308.74 and 18,862.58

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Solution

The fourth proportional to 21,250.86, 29,308.74 and 18,862.58 is: 26,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.86 : 29,308.74 = 18,862.58 : x
  2. Step 2: Convert to fraction form
    21,250.86/29,308.74 = 18,862.58/x
  3. Step 3: Cross multiply
    21,250.86x = 29,308.74 × 18,862.58
  4. Step 4: Simplify right side
    21,250.86x = 552,838,306.41
  5. Step 5: Solve for x
    x = 552,838,306.41/21,250.86
  6. Step 6: Final answer
    x = 26,014.87

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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.