Home / 31,690.18-47,542.47-16,891.30

Finding the Fourth Proportional to 31,690.18, 47,542.47 and 16,891.30

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Solution

The fourth proportional to 31,690.18, 47,542.47 and 16,891.30 is: 25,340.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.18 : 47,542.47 = 16,891.30 : x
  2. Step 2: Convert to fraction form
    31,690.18/47,542.47 = 16,891.30/x
  3. Step 3: Cross multiply
    31,690.18x = 47,542.47 × 16,891.30
  4. Step 4: Simplify right side
    31,690.18x = 803,054,123.51
  5. Step 5: Solve for x
    x = 803,054,123.51/31,690.18
  6. Step 6: Final answer
    x = 25,340.79

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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.