Home / 15,690.28-21,654.66-10,117.48

Finding the Fourth Proportional to 15,690.28, 21,654.66 and 10,117.48

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Solution

The fourth proportional to 15,690.28, 21,654.66 and 10,117.48 is: 13,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.28 : 21,654.66 = 10,117.48 : x
  2. Step 2: Convert to fraction form
    15,690.28/21,654.66 = 10,117.48/x
  3. Step 3: Cross multiply
    15,690.28x = 21,654.66 × 10,117.48
  4. Step 4: Simplify right side
    15,690.28x = 219,090,589.46
  5. Step 5: Solve for x
    x = 219,090,589.46/15,690.28
  6. Step 6: Final answer
    x = 13,963.46

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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.