Home / 18,118.77-27,158.19-13,662.13

Finding the Fourth Proportional to 18,118.77, 27,158.19 and 13,662.13

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Solution

The fourth proportional to 18,118.77, 27,158.19 and 13,662.13 is: 20,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.77 : 27,158.19 = 13,662.13 : x
  2. Step 2: Convert to fraction form
    18,118.77/27,158.19 = 13,662.13/x
  3. Step 3: Cross multiply
    18,118.77x = 27,158.19 × 13,662.13
  4. Step 4: Simplify right side
    18,118.77x = 371,038,722.34
  5. Step 5: Solve for x
    x = 371,038,722.34/18,118.77
  6. Step 6: Final answer
    x = 20,478.14

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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.