Home / 13,122.66-18,109.46-7,154.32

Finding the Fourth Proportional to 13,122.66, 18,109.46 and 7,154.32

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Solution

The fourth proportional to 13,122.66, 18,109.46 and 7,154.32 is: 9,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.66 : 18,109.46 = 7,154.32 : x
  2. Step 2: Convert to fraction form
    13,122.66/18,109.46 = 7,154.32/x
  3. Step 3: Cross multiply
    13,122.66x = 18,109.46 × 7,154.32
  4. Step 4: Simplify right side
    13,122.66x = 129,560,836.10
  5. Step 5: Solve for x
    x = 129,560,836.10/13,122.66
  6. Step 6: Final answer
    x = 9,873.06

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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.