Home / 13,155.36-18,158.40-8,966.04

Finding the Fourth Proportional to 13,155.36, 18,158.40 and 8,966.04

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Solution

The fourth proportional to 13,155.36, 18,158.40 and 8,966.04 is: 12,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.36 : 18,158.40 = 8,966.04 : x
  2. Step 2: Convert to fraction form
    13,155.36/18,158.40 = 8,966.04/x
  3. Step 3: Cross multiply
    13,155.36x = 18,158.40 × 8,966.04
  4. Step 4: Simplify right side
    13,155.36x = 162,808,940.74
  5. Step 5: Solve for x
    x = 162,808,940.74/13,155.36
  6. Step 6: Final answer
    x = 12,375.86

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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.