Home / 31,279.78-43,166.10-17,133.13

Finding the Fourth Proportional to 31,279.78, 43,166.10 and 17,133.13

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Solution

The fourth proportional to 31,279.78, 43,166.10 and 17,133.13 is: 23,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.78 : 43,166.10 = 17,133.13 : x
  2. Step 2: Convert to fraction form
    31,279.78/43,166.10 = 17,133.13/x
  3. Step 3: Cross multiply
    31,279.78x = 43,166.10 × 17,133.13
  4. Step 4: Simplify right side
    31,279.78x = 739,570,521.10
  5. Step 5: Solve for x
    x = 739,570,521.10/31,279.78
  6. Step 6: Final answer
    x = 23,643.72

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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.