Home / 18,717.24-28,095.30-13,789.20

Finding the Fourth Proportional to 18,717.24, 28,095.30 and 13,789.20

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Solution

The fourth proportional to 18,717.24, 28,095.30 and 13,789.20 is: 20,698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.24 : 28,095.30 = 13,789.20 : x
  2. Step 2: Convert to fraction form
    18,717.24/28,095.30 = 13,789.20/x
  3. Step 3: Cross multiply
    18,717.24x = 28,095.30 × 13,789.20
  4. Step 4: Simplify right side
    18,717.24x = 387,411,710.76
  5. Step 5: Solve for x
    x = 387,411,710.76/18,717.24
  6. Step 6: Final answer
    x = 20,698.12

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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.