Home / 18,825.13-28,240.15-5,678.83

Finding the Fourth Proportional to 18,825.13, 28,240.15 and 5,678.83

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Solution

The fourth proportional to 18,825.13, 28,240.15 and 5,678.83 is: 8,518.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.13 : 28,240.15 = 5,678.83 : x
  2. Step 2: Convert to fraction form
    18,825.13/28,240.15 = 5,678.83/x
  3. Step 3: Cross multiply
    18,825.13x = 28,240.15 × 5,678.83
  4. Step 4: Simplify right side
    18,825.13x = 160,371,011.02
  5. Step 5: Solve for x
    x = 160,371,011.02/18,825.13
  6. Step 6: Final answer
    x = 8,518.99

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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.