Home / 31,927.90-47,891.86-13,187.34

Finding the Fourth Proportional to 31,927.90, 47,891.86 and 13,187.34

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Solution

The fourth proportional to 31,927.90, 47,891.86 and 13,187.34 is: 19,781.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,927.90 : 47,891.86 = 13,187.34 : x
  2. Step 2: Convert to fraction form
    31,927.90/47,891.86 = 13,187.34/x
  3. Step 3: Cross multiply
    31,927.90x = 47,891.86 × 13,187.34
  4. Step 4: Simplify right side
    31,927.90x = 631,566,073.39
  5. Step 5: Solve for x
    x = 631,566,073.39/31,927.90
  6. Step 6: Final answer
    x = 19,781.01

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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.