Home / 21,245.40-29,301.30-14,869.80

Finding the Fourth Proportional to 21,245.40, 29,301.30 and 14,869.80

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Solution

The fourth proportional to 21,245.40, 29,301.30 and 14,869.80 is: 20,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.40 : 29,301.30 = 14,869.80 : x
  2. Step 2: Convert to fraction form
    21,245.40/29,301.30 = 14,869.80/x
  3. Step 3: Cross multiply
    21,245.40x = 29,301.30 × 14,869.80
  4. Step 4: Simplify right side
    21,245.40x = 435,704,470.74
  5. Step 5: Solve for x
    x = 435,704,470.74/21,245.40
  6. Step 6: Final answer
    x = 20,508.18

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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.