Home / 31,143.32-42,979.47-16,996.26

Finding the Fourth Proportional to 31,143.32, 42,979.47 and 16,996.26

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Solution

The fourth proportional to 31,143.32, 42,979.47 and 16,996.26 is: 23,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.32 : 42,979.47 = 16,996.26 : x
  2. Step 2: Convert to fraction form
    31,143.32/42,979.47 = 16,996.26/x
  3. Step 3: Cross multiply
    31,143.32x = 42,979.47 × 16,996.26
  4. Step 4: Simplify right side
    31,143.32x = 730,490,246.78
  5. Step 5: Solve for x
    x = 730,490,246.78/31,143.32
  6. Step 6: Final answer
    x = 23,455.76

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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.