Home / 18,117.77-27,156.69-13,661.13

Finding the Fourth Proportional to 18,117.77, 27,156.69 and 13,661.13

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Solution

The fourth proportional to 18,117.77, 27,156.69 and 13,661.13 is: 20,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.77 : 27,156.69 = 13,661.13 : x
  2. Step 2: Convert to fraction form
    18,117.77/27,156.69 = 13,661.13/x
  3. Step 3: Cross multiply
    18,117.77x = 27,156.69 × 13,661.13
  4. Step 4: Simplify right side
    18,117.77x = 370,991,072.46
  5. Step 5: Solve for x
    x = 370,991,072.46/18,117.77
  6. Step 6: Final answer
    x = 20,476.65

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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.