Home / 15,459.96-23,138.10-12,686.52

Finding the Fourth Proportional to 15,459.96, 23,138.10 and 12,686.52

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Solution

The fourth proportional to 15,459.96, 23,138.10 and 12,686.52 is: 18,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.96 : 23,138.10 = 12,686.52 : x
  2. Step 2: Convert to fraction form
    15,459.96/23,138.10 = 12,686.52/x
  3. Step 3: Cross multiply
    15,459.96x = 23,138.10 × 12,686.52
  4. Step 4: Simplify right side
    15,459.96x = 293,541,968.41
  5. Step 5: Solve for x
    x = 293,541,968.41/15,459.96
  6. Step 6: Final answer
    x = 18,987.24

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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.