Home / 31,499.72-47,220.40-17,639

Finding the Fourth Proportional to 31,499.72, 47,220.40 and 17,639

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Solution

The fourth proportional to 31,499.72, 47,220.40 and 17,639 is: 26,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,499.72 : 47,220.40 = 17,639 : x
  2. Step 2: Convert to fraction form
    31,499.72/47,220.40 = 17,639/x
  3. Step 3: Cross multiply
    31,499.72x = 47,220.40 × 17,639
  4. Step 4: Simplify right side
    31,499.72x = 832,920,635.60
  5. Step 5: Solve for x
    x = 832,920,635.60/31,499.72
  6. Step 6: Final answer
    x = 26,442.16

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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.