Home / 19,442.17-26,809-13,143.61

Finding the Fourth Proportional to 19,442.17, 26,809 and 13,143.61

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Solution

The fourth proportional to 19,442.17, 26,809 and 13,143.61 is: 18,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,442.17 : 26,809 = 13,143.61 : x
  2. Step 2: Convert to fraction form
    19,442.17/26,809 = 13,143.61/x
  3. Step 3: Cross multiply
    19,442.17x = 26,809 × 13,143.61
  4. Step 4: Simplify right side
    19,442.17x = 352,367,040.49
  5. Step 5: Solve for x
    x = 352,367,040.49/19,442.17
  6. Step 6: Final answer
    x = 18,123.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.