Home / 19,589.20-29,410.80-12,612.40

Finding the Fourth Proportional to 19,589.20, 29,410.80 and 12,612.40

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Solution

The fourth proportional to 19,589.20, 29,410.80 and 12,612.40 is: 18,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,589.20 : 29,410.80 = 12,612.40 : x
  2. Step 2: Convert to fraction form
    19,589.20/29,410.80 = 12,612.40/x
  3. Step 3: Cross multiply
    19,589.20x = 29,410.80 × 12,612.40
  4. Step 4: Simplify right side
    19,589.20x = 370,940,773.92
  5. Step 5: Solve for x
    x = 370,940,773.92/19,589.20
  6. Step 6: Final answer
    x = 18,935.98

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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.