Home / 15,811.62-23,720.16-6,456.72

Finding the Fourth Proportional to 15,811.62, 23,720.16 and 6,456.72

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Solution

The fourth proportional to 15,811.62, 23,720.16 and 6,456.72 is: 9,686.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.62 : 23,720.16 = 6,456.72 : x
  2. Step 2: Convert to fraction form
    15,811.62/23,720.16 = 6,456.72/x
  3. Step 3: Cross multiply
    15,811.62x = 23,720.16 × 6,456.72
  4. Step 4: Simplify right side
    15,811.62x = 153,154,431.48
  5. Step 5: Solve for x
    x = 153,154,431.48/15,811.62
  6. Step 6: Final answer
    x = 9,686.19

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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.