Home / 18,960.28-26,158.14-10,998.04

Finding the Fourth Proportional to 18,960.28, 26,158.14 and 10,998.04

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Solution

The fourth proportional to 18,960.28, 26,158.14 and 10,998.04 is: 15,173.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.28 : 26,158.14 = 10,998.04 : x
  2. Step 2: Convert to fraction form
    18,960.28/26,158.14 = 10,998.04/x
  3. Step 3: Cross multiply
    18,960.28x = 26,158.14 × 10,998.04
  4. Step 4: Simplify right side
    18,960.28x = 287,688,270.05
  5. Step 5: Solve for x
    x = 287,688,270.05/18,960.28
  6. Step 6: Final answer
    x = 15,173.21

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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.