Home / 31,126.23-42,954.19-16,979.06

Finding the Fourth Proportional to 31,126.23, 42,954.19 and 16,979.06

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Solution

The fourth proportional to 31,126.23, 42,954.19 and 16,979.06 is: 23,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,126.23 : 42,954.19 = 16,979.06 : x
  2. Step 2: Convert to fraction form
    31,126.23/42,954.19 = 16,979.06/x
  3. Step 3: Cross multiply
    31,126.23x = 42,954.19 × 16,979.06
  4. Step 4: Simplify right side
    31,126.23x = 729,321,834.20
  5. Step 5: Solve for x
    x = 729,321,834.20/31,126.23
  6. Step 6: Final answer
    x = 23,431.10

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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.