Home / 9,965.40-13,752.35-5,489.18

Finding the Fourth Proportional to 9,965.40, 13,752.35 and 5,489.18

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Solution

The fourth proportional to 9,965.40, 13,752.35 and 5,489.18 is: 7,575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.40 : 13,752.35 = 5,489.18 : x
  2. Step 2: Convert to fraction form
    9,965.40/13,752.35 = 5,489.18/x
  3. Step 3: Cross multiply
    9,965.40x = 13,752.35 × 5,489.18
  4. Step 4: Simplify right side
    9,965.40x = 75,489,028.37
  5. Step 5: Solve for x
    x = 75,489,028.37/9,965.40
  6. Step 6: Final answer
    x = 7,575.11

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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.