Home / 21,375.40-29,487.30-14,302.12

Finding the Fourth Proportional to 21,375.40, 29,487.30 and 14,302.12

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Solution

The fourth proportional to 21,375.40, 29,487.30 and 14,302.12 is: 19,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.40 : 29,487.30 = 14,302.12 : x
  2. Step 2: Convert to fraction form
    21,375.40/29,487.30 = 14,302.12/x
  3. Step 3: Cross multiply
    21,375.40x = 29,487.30 × 14,302.12
  4. Step 4: Simplify right side
    21,375.40x = 421,730,903.08
  5. Step 5: Solve for x
    x = 421,730,903.08/21,375.40
  6. Step 6: Final answer
    x = 19,729.73

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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.