Home / 18,690.27-28,042.23-8,699.76

Finding the Fourth Proportional to 18,690.27, 28,042.23 and 8,699.76

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Solution

The fourth proportional to 18,690.27, 28,042.23 and 8,699.76 is: 13,052.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.27 : 28,042.23 = 8,699.76 : x
  2. Step 2: Convert to fraction form
    18,690.27/28,042.23 = 8,699.76/x
  3. Step 3: Cross multiply
    18,690.27x = 28,042.23 × 8,699.76
  4. Step 4: Simplify right side
    18,690.27x = 243,960,670.86
  5. Step 5: Solve for x
    x = 243,960,670.86/18,690.27
  6. Step 6: Final answer
    x = 13,052.82

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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.