Home / 12,101.45-18,061.89-11,806.16

Finding the Fourth Proportional to 12,101.45, 18,061.89 and 11,806.16

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Solution

The fourth proportional to 12,101.45, 18,061.89 and 11,806.16 is: 17,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.45 : 18,061.89 = 11,806.16 : x
  2. Step 2: Convert to fraction form
    12,101.45/18,061.89 = 11,806.16/x
  3. Step 3: Cross multiply
    12,101.45x = 18,061.89 × 11,806.16
  4. Step 4: Simplify right side
    12,101.45x = 213,241,428.66
  5. Step 5: Solve for x
    x = 213,241,428.66/12,101.45
  6. Step 6: Final answer
    x = 17,621.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.