Home / 19,865.02-27,419.87-12,791.43

Finding the Fourth Proportional to 19,865.02, 27,419.87 and 12,791.43

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Solution

The fourth proportional to 19,865.02, 27,419.87 and 12,791.43 is: 17,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.02 : 27,419.87 = 12,791.43 : x
  2. Step 2: Convert to fraction form
    19,865.02/27,419.87 = 12,791.43/x
  3. Step 3: Cross multiply
    19,865.02x = 27,419.87 × 12,791.43
  4. Step 4: Simplify right side
    19,865.02x = 350,739,347.71
  5. Step 5: Solve for x
    x = 350,739,347.71/19,865.02
  6. Step 6: Final answer
    x = 17,656.13

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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.