Home / 21,729.40-29,981.55-14,546.32

Finding the Fourth Proportional to 21,729.40, 29,981.55 and 14,546.32

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Solution

The fourth proportional to 21,729.40, 29,981.55 and 14,546.32 is: 20,070.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.40 : 29,981.55 = 14,546.32 : x
  2. Step 2: Convert to fraction form
    21,729.40/29,981.55 = 14,546.32/x
  3. Step 3: Cross multiply
    21,729.40x = 29,981.55 × 14,546.32
  4. Step 4: Simplify right side
    21,729.40x = 436,121,220.40
  5. Step 5: Solve for x
    x = 436,121,220.40/21,729.40
  6. Step 6: Final answer
    x = 20,070.56

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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.