Home / 29,405.32-40,578.85-15,976.78

Finding the Fourth Proportional to 29,405.32, 40,578.85 and 15,976.78

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Solution

The fourth proportional to 29,405.32, 40,578.85 and 15,976.78 is: 22,047.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,405.32 : 40,578.85 = 15,976.78 : x
  2. Step 2: Convert to fraction form
    29,405.32/40,578.85 = 15,976.78/x
  3. Step 3: Cross multiply
    29,405.32x = 40,578.85 × 15,976.78
  4. Step 4: Simplify right side
    29,405.32x = 648,319,359.10
  5. Step 5: Solve for x
    x = 648,319,359.10/29,405.32
  6. Step 6: Final answer
    x = 22,047.69

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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.