Home / 13,116.77-18,101.17-7,148.44

Finding the Fourth Proportional to 13,116.77, 18,101.17 and 7,148.44

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Solution

The fourth proportional to 13,116.77, 18,101.17 and 7,148.44 is: 9,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.77 : 18,101.17 = 7,148.44 : x
  2. Step 2: Convert to fraction form
    13,116.77/18,101.17 = 7,148.44/x
  3. Step 3: Cross multiply
    13,116.77x = 18,101.17 × 7,148.44
  4. Step 4: Simplify right side
    13,116.77x = 129,395,127.67
  5. Step 5: Solve for x
    x = 129,395,127.67/13,116.77
  6. Step 6: Final answer
    x = 9,864.86

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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.