Home / 13,085.12-18,057.32-9,742.88

Finding the Fourth Proportional to 13,085.12, 18,057.32 and 9,742.88

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Solution

The fourth proportional to 13,085.12, 18,057.32 and 9,742.88 is: 13,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.12 : 18,057.32 = 9,742.88 : x
  2. Step 2: Convert to fraction form
    13,085.12/18,057.32 = 9,742.88/x
  3. Step 3: Cross multiply
    13,085.12x = 18,057.32 × 9,742.88
  4. Step 4: Simplify right side
    13,085.12x = 175,930,301.88
  5. Step 5: Solve for x
    x = 175,930,301.88/13,085.12
  6. Step 6: Final answer
    x = 13,445.07

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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.