Home / 18,729.04-28,101.12-8,333.68

Finding the Fourth Proportional to 18,729.04, 28,101.12 and 8,333.68

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Solution

The fourth proportional to 18,729.04, 28,101.12 and 8,333.68 is: 12,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.04 : 28,101.12 = 8,333.68 : x
  2. Step 2: Convert to fraction form
    18,729.04/28,101.12 = 8,333.68/x
  3. Step 3: Cross multiply
    18,729.04x = 28,101.12 × 8,333.68
  4. Step 4: Simplify right side
    18,729.04x = 234,185,741.72
  5. Step 5: Solve for x
    x = 234,185,741.72/18,729.04
  6. Step 6: Final answer
    x = 12,503.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.