Home / 15,720.67-23,579.79-9,142.66

Finding the Fourth Proportional to 15,720.67, 23,579.79 and 9,142.66

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Solution

The fourth proportional to 15,720.67, 23,579.79 and 9,142.66 is: 13,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.67 : 23,579.79 = 9,142.66 : x
  2. Step 2: Convert to fraction form
    15,720.67/23,579.79 = 9,142.66/x
  3. Step 3: Cross multiply
    15,720.67x = 23,579.79 × 9,142.66
  4. Step 4: Simplify right side
    15,720.67x = 215,582,002.84
  5. Step 5: Solve for x
    x = 215,582,002.84/15,720.67
  6. Step 6: Final answer
    x = 13,713.28

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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.