Home / 40,388.30-60,592.20-12,686.30

Finding the Fourth Proportional to 40,388.30, 60,592.20 and 12,686.30

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Solution

The fourth proportional to 40,388.30, 60,592.20 and 12,686.30 is: 19,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,388.30 : 60,592.20 = 12,686.30 : x
  2. Step 2: Convert to fraction form
    40,388.30/60,592.20 = 12,686.30/x
  3. Step 3: Cross multiply
    40,388.30x = 60,592.20 × 12,686.30
  4. Step 4: Simplify right side
    40,388.30x = 768,690,826.86
  5. Step 5: Solve for x
    x = 768,690,826.86/40,388.30
  6. Step 6: Final answer
    x = 19,032.51

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1.5x scale

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.