Home / 12,709.32-17,520.30-8,921.04

Finding the Fourth Proportional to 12,709.32, 17,520.30 and 8,921.04

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Solution

The fourth proportional to 12,709.32, 17,520.30 and 8,921.04 is: 12,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.32 : 17,520.30 = 8,921.04 : x
  2. Step 2: Convert to fraction form
    12,709.32/17,520.30 = 8,921.04/x
  3. Step 3: Cross multiply
    12,709.32x = 17,520.30 × 8,921.04
  4. Step 4: Simplify right side
    12,709.32x = 156,299,297.11
  5. Step 5: Solve for x
    x = 156,299,297.11/12,709.32
  6. Step 6: Final answer
    x = 12,298.01

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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.