Home / 18,666.79-28,000.17-5,518.13

Finding the Fourth Proportional to 18,666.79, 28,000.17 and 5,518.13

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Solution

The fourth proportional to 18,666.79, 28,000.17 and 5,518.13 is: 8,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.79 : 28,000.17 = 5,518.13 : x
  2. Step 2: Convert to fraction form
    18,666.79/28,000.17 = 5,518.13/x
  3. Step 3: Cross multiply
    18,666.79x = 28,000.17 × 5,518.13
  4. Step 4: Simplify right side
    18,666.79x = 154,508,438.08
  5. Step 5: Solve for x
    x = 154,508,438.08/18,666.79
  6. Step 6: Final answer
    x = 8,277.18

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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.