Home / 31,638.71-47,359.24-21,117.35

Finding the Fourth Proportional to 31,638.71, 47,359.24 and 21,117.35

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Solution

The fourth proportional to 31,638.71, 47,359.24 and 21,117.35 is: 31,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.71 : 47,359.24 = 21,117.35 : x
  2. Step 2: Convert to fraction form
    31,638.71/47,359.24 = 21,117.35/x
  3. Step 3: Cross multiply
    31,638.71x = 47,359.24 × 21,117.35
  4. Step 4: Simplify right side
    31,638.71x = 1,000,101,646.81
  5. Step 5: Solve for x
    x = 1,000,101,646.81/31,638.71
  6. Step 6: Final answer
    x = 31,610.06

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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.