Home / 31,379.49-47,040.39-13,599

Finding the Fourth Proportional to 31,379.49, 47,040.39 and 13,599

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Solution

The fourth proportional to 31,379.49, 47,040.39 and 13,599 is: 20,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.49 : 47,040.39 = 13,599 : x
  2. Step 2: Convert to fraction form
    31,379.49/47,040.39 = 13,599/x
  3. Step 3: Cross multiply
    31,379.49x = 47,040.39 × 13,599
  4. Step 4: Simplify right side
    31,379.49x = 639,702,263.61
  5. Step 5: Solve for x
    x = 639,702,263.61/31,379.49
  6. Step 6: Final answer
    x = 20,386.00

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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.