Home / 27,143.53-40,720.66-13,113.32

Finding the Fourth Proportional to 27,143.53, 40,720.66 and 13,113.32

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Solution

The fourth proportional to 27,143.53, 40,720.66 and 13,113.32 is: 19,672.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.53 : 40,720.66 = 13,113.32 : x
  2. Step 2: Convert to fraction form
    27,143.53/40,720.66 = 13,113.32/x
  3. Step 3: Cross multiply
    27,143.53x = 40,720.66 × 13,113.32
  4. Step 4: Simplify right side
    27,143.53x = 533,982,808.80
  5. Step 5: Solve for x
    x = 533,982,808.80/27,143.53
  6. Step 6: Final answer
    x = 19,672.56

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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.