Home / 10,140.11-15,189.51-8,272.65

Finding the Fourth Proportional to 10,140.11, 15,189.51 and 8,272.65

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Solution

The fourth proportional to 10,140.11, 15,189.51 and 8,272.65 is: 12,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.11 : 15,189.51 = 8,272.65 : x
  2. Step 2: Convert to fraction form
    10,140.11/15,189.51 = 8,272.65/x
  3. Step 3: Cross multiply
    10,140.11x = 15,189.51 × 8,272.65
  4. Step 4: Simplify right side
    10,140.11x = 125,657,507.72
  5. Step 5: Solve for x
    x = 125,657,507.72/10,140.11
  6. Step 6: Final answer
    x = 12,392.13

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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.