Home / 18,672.04-28,005.18-8,281.96

Finding the Fourth Proportional to 18,672.04, 28,005.18 and 8,281.96

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Solution

The fourth proportional to 18,672.04, 28,005.18 and 8,281.96 is: 12,421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.04 : 28,005.18 = 8,281.96 : x
  2. Step 2: Convert to fraction form
    18,672.04/28,005.18 = 8,281.96/x
  3. Step 3: Cross multiply
    18,672.04x = 28,005.18 × 8,281.96
  4. Step 4: Simplify right side
    18,672.04x = 231,937,780.55
  5. Step 5: Solve for x
    x = 231,937,780.55/18,672.04
  6. Step 6: Final answer
    x = 12,421.66

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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.