Home / 11,209.12-15,468.36-7,019.68

Finding the Fourth Proportional to 11,209.12, 15,468.36 and 7,019.68

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Solution

The fourth proportional to 11,209.12, 15,468.36 and 7,019.68 is: 9,687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.12 : 15,468.36 = 7,019.68 : x
  2. Step 2: Convert to fraction form
    11,209.12/15,468.36 = 7,019.68/x
  3. Step 3: Cross multiply
    11,209.12x = 15,468.36 × 7,019.68
  4. Step 4: Simplify right side
    11,209.12x = 108,582,937.32
  5. Step 5: Solve for x
    x = 108,582,937.32/11,209.12
  6. Step 6: Final answer
    x = 9,687.02

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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.