Home / 18,139.23-26,999.19-17,730.99

Finding the Fourth Proportional to 18,139.23, 26,999.19 and 17,730.99

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Solution

The fourth proportional to 18,139.23, 26,999.19 and 17,730.99 is: 26,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.23 : 26,999.19 = 17,730.99 : x
  2. Step 2: Convert to fraction form
    18,139.23/26,999.19 = 17,730.99/x
  3. Step 3: Cross multiply
    18,139.23x = 26,999.19 × 17,730.99
  4. Step 4: Simplify right side
    18,139.23x = 478,722,367.90
  5. Step 5: Solve for x
    x = 478,722,367.90/18,139.23
  6. Step 6: Final answer
    x = 26,391.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.