Home / 29,138.07-43,707.12-12,487.30

Finding the Fourth Proportional to 29,138.07, 43,707.12 and 12,487.30

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Solution

The fourth proportional to 29,138.07, 43,707.12 and 12,487.30 is: 18,730.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.07 : 43,707.12 = 12,487.30 : x
  2. Step 2: Convert to fraction form
    29,138.07/43,707.12 = 12,487.30/x
  3. Step 3: Cross multiply
    29,138.07x = 43,707.12 × 12,487.30
  4. Step 4: Simplify right side
    29,138.07x = 545,783,919.58
  5. Step 5: Solve for x
    x = 545,783,919.58/29,138.07
  6. Step 6: Final answer
    x = 18,730.96

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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.