Home / 15,102.32-20,842.13-8,387.99

Finding the Fourth Proportional to 15,102.32, 20,842.13 and 8,387.99

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Solution

The fourth proportional to 15,102.32, 20,842.13 and 8,387.99 is: 11,575.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.32 : 20,842.13 = 8,387.99 : x
  2. Step 2: Convert to fraction form
    15,102.32/20,842.13 = 8,387.99/x
  3. Step 3: Cross multiply
    15,102.32x = 20,842.13 × 8,387.99
  4. Step 4: Simplify right side
    15,102.32x = 174,823,431.87
  5. Step 5: Solve for x
    x = 174,823,431.87/15,102.32
  6. Step 6: Final answer
    x = 11,575.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.