Home / 20,729.52-28,607.04-12,767.22

Finding the Fourth Proportional to 20,729.52, 28,607.04 and 12,767.22

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Solution

The fourth proportional to 20,729.52, 28,607.04 and 12,767.22 is: 17,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.52 : 28,607.04 = 12,767.22 : x
  2. Step 2: Convert to fraction form
    20,729.52/28,607.04 = 12,767.22/x
  3. Step 3: Cross multiply
    20,729.52x = 28,607.04 × 12,767.22
  4. Step 4: Simplify right side
    20,729.52x = 365,232,373.23
  5. Step 5: Solve for x
    x = 365,232,373.23/20,729.52
  6. Step 6: Final answer
    x = 17,618.95

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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.