Home / 31,403.70-43,339.50-17,979.12

Finding the Fourth Proportional to 31,403.70, 43,339.50 and 17,979.12

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Solution

The fourth proportional to 31,403.70, 43,339.50 and 17,979.12 is: 24,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,403.70 : 43,339.50 = 17,979.12 : x
  2. Step 2: Convert to fraction form
    31,403.70/43,339.50 = 17,979.12/x
  3. Step 3: Cross multiply
    31,403.70x = 43,339.50 × 17,979.12
  4. Step 4: Simplify right side
    31,403.70x = 779,206,071.24
  5. Step 5: Solve for x
    x = 779,206,071.24/31,403.70
  6. Step 6: Final answer
    x = 24,812.56

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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.