Home / 15,118.28-20,863.32-8,404.54

Finding the Fourth Proportional to 15,118.28, 20,863.32 and 8,404.54

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Solution

The fourth proportional to 15,118.28, 20,863.32 and 8,404.54 is: 11,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.28 : 20,863.32 = 8,404.54 : x
  2. Step 2: Convert to fraction form
    15,118.28/20,863.32 = 8,404.54/x
  3. Step 3: Cross multiply
    15,118.28x = 20,863.32 × 8,404.54
  4. Step 4: Simplify right side
    15,118.28x = 175,346,607.47
  5. Step 5: Solve for x
    x = 175,346,607.47/15,118.28
  6. Step 6: Final answer
    x = 11,598.32

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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.