Home / 29,235.91-40,364-20,280.28

Finding the Fourth Proportional to 29,235.91, 40,364 and 20,280.28

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Solution

The fourth proportional to 29,235.91, 40,364 and 20,280.28 is: 27,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,235.91 : 40,364 = 20,280.28 : x
  2. Step 2: Convert to fraction form
    29,235.91/40,364 = 20,280.28/x
  3. Step 3: Cross multiply
    29,235.91x = 40,364 × 20,280.28
  4. Step 4: Simplify right side
    29,235.91x = 818,593,221.92
  5. Step 5: Solve for x
    x = 818,593,221.92/29,235.91
  6. Step 6: Final answer
    x = 27,999.58

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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.