Home / 18,717.12-28,070.19-15,422.04

Finding the Fourth Proportional to 18,717.12, 28,070.19 and 15,422.04

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Solution

The fourth proportional to 18,717.12, 28,070.19 and 15,422.04 is: 23,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.12 : 28,070.19 = 15,422.04 : x
  2. Step 2: Convert to fraction form
    18,717.12/28,070.19 = 15,422.04/x
  3. Step 3: Cross multiply
    18,717.12x = 28,070.19 × 15,422.04
  4. Step 4: Simplify right side
    18,717.12x = 432,899,592.99
  5. Step 5: Solve for x
    x = 432,899,592.99/18,717.12
  6. Step 6: Final answer
    x = 23,128.54

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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.