Home / 19,791.40-27,312.75-10,839.76

Finding the Fourth Proportional to 19,791.40, 27,312.75 and 10,839.76

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Solution

The fourth proportional to 19,791.40, 27,312.75 and 10,839.76 is: 14,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.40 : 27,312.75 = 10,839.76 : x
  2. Step 2: Convert to fraction form
    19,791.40/27,312.75 = 10,839.76/x
  3. Step 3: Cross multiply
    19,791.40x = 27,312.75 × 10,839.76
  4. Step 4: Simplify right side
    19,791.40x = 296,063,654.94
  5. Step 5: Solve for x
    x = 296,063,654.94/19,791.40
  6. Step 6: Final answer
    x = 14,959.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.