Home / 15,720.79-23,576.18-5,188.85

Finding the Fourth Proportional to 15,720.79, 23,576.18 and 5,188.85

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Solution

The fourth proportional to 15,720.79, 23,576.18 and 5,188.85 is: 7,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.79 : 23,576.18 = 5,188.85 : x
  2. Step 2: Convert to fraction form
    15,720.79/23,576.18 = 5,188.85/x
  3. Step 3: Cross multiply
    15,720.79x = 23,576.18 × 5,188.85
  4. Step 4: Simplify right side
    15,720.79x = 122,333,261.59
  5. Step 5: Solve for x
    x = 122,333,261.59/15,720.79
  6. Step 6: Final answer
    x = 7,781.62

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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.