Home / 18,686.17-28,032.71-5,358.61

Finding the Fourth Proportional to 18,686.17, 28,032.71 and 5,358.61

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Solution

The fourth proportional to 18,686.17, 28,032.71 and 5,358.61 is: 8,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.17 : 28,032.71 = 5,358.61 : x
  2. Step 2: Convert to fraction form
    18,686.17/28,032.71 = 5,358.61/x
  3. Step 3: Cross multiply
    18,686.17x = 28,032.71 × 5,358.61
  4. Step 4: Simplify right side
    18,686.17x = 150,216,225.77
  5. Step 5: Solve for x
    x = 150,216,225.77/18,686.17
  6. Step 6: Final answer
    x = 8,038.90

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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.