Home / 14,575.20-20,113.12-8,919.36

Finding the Fourth Proportional to 14,575.20, 20,113.12 and 8,919.36

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Solution

The fourth proportional to 14,575.20, 20,113.12 and 8,919.36 is: 12,308.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.20 : 20,113.12 = 8,919.36 : x
  2. Step 2: Convert to fraction form
    14,575.20/20,113.12 = 8,919.36/x
  3. Step 3: Cross multiply
    14,575.20x = 20,113.12 × 8,919.36
  4. Step 4: Simplify right side
    14,575.20x = 179,396,158.00
  5. Step 5: Solve for x
    x = 179,396,158.00/14,575.20
  6. Step 6: Final answer
    x = 12,308.32

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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.