Home / 13,098.97-18,077.17-7,721.63

Finding the Fourth Proportional to 13,098.97, 18,077.17 and 7,721.63

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Solution

The fourth proportional to 13,098.97, 18,077.17 and 7,721.63 is: 10,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.97 : 18,077.17 = 7,721.63 : x
  2. Step 2: Convert to fraction form
    13,098.97/18,077.17 = 7,721.63/x
  3. Step 3: Cross multiply
    13,098.97x = 18,077.17 × 7,721.63
  4. Step 4: Simplify right side
    13,098.97x = 139,585,218.19
  5. Step 5: Solve for x
    x = 139,585,218.19/13,098.97
  6. Step 6: Final answer
    x = 10,656.20

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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.