Home / 31,806.45-47,726.07-13,100.31

Finding the Fourth Proportional to 31,806.45, 47,726.07 and 13,100.31

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Solution

The fourth proportional to 31,806.45, 47,726.07 and 13,100.31 is: 19,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.45 : 47,726.07 = 13,100.31 : x
  2. Step 2: Convert to fraction form
    31,806.45/47,726.07 = 13,100.31/x
  3. Step 3: Cross multiply
    31,806.45x = 47,726.07 × 13,100.31
  4. Step 4: Simplify right side
    31,806.45x = 625,226,312.08
  5. Step 5: Solve for x
    x = 625,226,312.08/31,806.45
  6. Step 6: Final answer
    x = 19,657.22

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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.