Home / 31,511.43-47,278.08-13,993.56

Finding the Fourth Proportional to 31,511.43, 47,278.08 and 13,993.56

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Solution

The fourth proportional to 31,511.43, 47,278.08 and 13,993.56 is: 20,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.43 : 47,278.08 = 13,993.56 : x
  2. Step 2: Convert to fraction form
    31,511.43/47,278.08 = 13,993.56/x
  3. Step 3: Cross multiply
    31,511.43x = 47,278.08 × 13,993.56
  4. Step 4: Simplify right side
    31,511.43x = 661,588,649.16
  5. Step 5: Solve for x
    x = 661,588,649.16/31,511.43
  6. Step 6: Final answer
    x = 20,995.20

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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.