Home / 31,398.24-47,115.72-11,690.76

Finding the Fourth Proportional to 31,398.24, 47,115.72 and 11,690.76

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Solution

The fourth proportional to 31,398.24, 47,115.72 and 11,690.76 is: 17,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,398.24 : 47,115.72 = 11,690.76 : x
  2. Step 2: Convert to fraction form
    31,398.24/47,115.72 = 11,690.76/x
  3. Step 3: Cross multiply
    31,398.24x = 47,115.72 × 11,690.76
  4. Step 4: Simplify right side
    31,398.24x = 550,818,574.75
  5. Step 5: Solve for x
    x = 550,818,574.75/31,398.24
  6. Step 6: Final answer
    x = 17,542.98

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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.