Home / 31,426.10-47,139.13-9,239.66

Finding the Fourth Proportional to 31,426.10, 47,139.13 and 9,239.66

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Solution

The fourth proportional to 31,426.10, 47,139.13 and 9,239.66 is: 13,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.10 : 47,139.13 = 9,239.66 : x
  2. Step 2: Convert to fraction form
    31,426.10/47,139.13 = 9,239.66/x
  3. Step 3: Cross multiply
    31,426.10x = 47,139.13 × 9,239.66
  4. Step 4: Simplify right side
    31,426.10x = 435,549,275.10
  5. Step 5: Solve for x
    x = 435,549,275.10/31,426.10
  6. Step 6: Final answer
    x = 13,859.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.