Home / 18,880.12-28,342.06-10,132.12

Finding the Fourth Proportional to 18,880.12, 28,342.06 and 10,132.12

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Solution

The fourth proportional to 18,880.12, 28,342.06 and 10,132.12 is: 15,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.12 : 28,342.06 = 10,132.12 : x
  2. Step 2: Convert to fraction form
    18,880.12/28,342.06 = 10,132.12/x
  3. Step 3: Cross multiply
    18,880.12x = 28,342.06 × 10,132.12
  4. Step 4: Simplify right side
    18,880.12x = 287,165,152.97
  5. Step 5: Solve for x
    x = 287,165,152.97/18,880.12
  6. Step 6: Final answer
    x = 15,209.92

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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.