Home / 13,142.04-19,720.92-5,243.16

Finding the Fourth Proportional to 13,142.04, 19,720.92 and 5,243.16

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Solution

The fourth proportional to 13,142.04, 19,720.92 and 5,243.16 is: 7,867.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.04 : 19,720.92 = 5,243.16 : x
  2. Step 2: Convert to fraction form
    13,142.04/19,720.92 = 5,243.16/x
  3. Step 3: Cross multiply
    13,142.04x = 19,720.92 × 5,243.16
  4. Step 4: Simplify right side
    13,142.04x = 103,399,938.91
  5. Step 5: Solve for x
    x = 103,399,938.91/13,142.04
  6. Step 6: Final answer
    x = 7,867.88

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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.