Home / 12,661.44-17,448.12-9,117.96

Finding the Fourth Proportional to 12,661.44, 17,448.12 and 9,117.96

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Solution

The fourth proportional to 12,661.44, 17,448.12 and 9,117.96 is: 12,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.44 : 17,448.12 = 9,117.96 : x
  2. Step 2: Convert to fraction form
    12,661.44/17,448.12 = 9,117.96/x
  3. Step 3: Cross multiply
    12,661.44x = 17,448.12 × 9,117.96
  4. Step 4: Simplify right side
    12,661.44x = 159,091,260.24
  5. Step 5: Solve for x
    x = 159,091,260.24/12,661.44
  6. Step 6: Final answer
    x = 12,565.02

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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.