Home / 12,220.91-18,320.43-9,097.15

Finding the Fourth Proportional to 12,220.91, 18,320.43 and 9,097.15

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Solution

The fourth proportional to 12,220.91, 18,320.43 and 9,097.15 is: 13,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.91 : 18,320.43 = 9,097.15 : x
  2. Step 2: Convert to fraction form
    12,220.91/18,320.43 = 9,097.15/x
  3. Step 3: Cross multiply
    12,220.91x = 18,320.43 × 9,097.15
  4. Step 4: Simplify right side
    12,220.91x = 166,663,608.17
  5. Step 5: Solve for x
    x = 166,663,608.17/12,220.91
  6. Step 6: Final answer
    x = 13,637.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.