Home / 13,171.95-18,177.32-8,135.01

Finding the Fourth Proportional to 13,171.95, 18,177.32 and 8,135.01

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Solution

The fourth proportional to 13,171.95, 18,177.32 and 8,135.01 is: 11,226.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.95 : 18,177.32 = 8,135.01 : x
  2. Step 2: Convert to fraction form
    13,171.95/18,177.32 = 8,135.01/x
  3. Step 3: Cross multiply
    13,171.95x = 18,177.32 × 8,135.01
  4. Step 4: Simplify right side
    13,171.95x = 147,872,700.31
  5. Step 5: Solve for x
    x = 147,872,700.31/13,171.95
  6. Step 6: Final answer
    x = 11,226.33

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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.