Home / 31,631.82-47,434.65-12,899.15

Finding the Fourth Proportional to 31,631.82, 47,434.65 and 12,899.15

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Solution

The fourth proportional to 31,631.82, 47,434.65 and 12,899.15 is: 19,343.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631.82 : 47,434.65 = 12,899.15 : x
  2. Step 2: Convert to fraction form
    31,631.82/47,434.65 = 12,899.15/x
  3. Step 3: Cross multiply
    31,631.82x = 47,434.65 × 12,899.15
  4. Step 4: Simplify right side
    31,631.82x = 611,866,428.37
  5. Step 5: Solve for x
    x = 611,866,428.37/31,631.82
  6. Step 6: Final answer
    x = 19,343.38

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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.