Home / 12,591.24-18,884.70-5,195.40

Finding the Fourth Proportional to 12,591.24, 18,884.70 and 5,195.40

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Solution

The fourth proportional to 12,591.24, 18,884.70 and 5,195.40 is: 7,792.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.24 : 18,884.70 = 5,195.40 : x
  2. Step 2: Convert to fraction form
    12,591.24/18,884.70 = 5,195.40/x
  3. Step 3: Cross multiply
    12,591.24x = 18,884.70 × 5,195.40
  4. Step 4: Simplify right side
    12,591.24x = 98,113,570.38
  5. Step 5: Solve for x
    x = 98,113,570.38/12,591.24
  6. Step 6: Final answer
    x = 7,792.21

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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.