Home / 31,418.68-47,131.45-13,637.11

Finding the Fourth Proportional to 31,418.68, 47,131.45 and 13,637.11

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Solution

The fourth proportional to 31,418.68, 47,131.45 and 13,637.11 is: 20,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.68 : 47,131.45 = 13,637.11 : x
  2. Step 2: Convert to fraction form
    31,418.68/47,131.45 = 13,637.11/x
  3. Step 3: Cross multiply
    31,418.68x = 47,131.45 × 13,637.11
  4. Step 4: Simplify right side
    31,418.68x = 642,736,768.11
  5. Step 5: Solve for x
    x = 642,736,768.11/31,418.68
  6. Step 6: Final answer
    x = 20,457.15

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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.