Home / 28,964.32-39,972.08-22,665.76

Finding the Fourth Proportional to 28,964.32, 39,972.08 and 22,665.76

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Solution

The fourth proportional to 28,964.32, 39,972.08 and 22,665.76 is: 31,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964.32 : 39,972.08 = 22,665.76 : x
  2. Step 2: Convert to fraction form
    28,964.32/39,972.08 = 22,665.76/x
  3. Step 3: Cross multiply
    28,964.32x = 39,972.08 × 22,665.76
  4. Step 4: Simplify right side
    28,964.32x = 905,997,571.98
  5. Step 5: Solve for x
    x = 905,997,571.98/28,964.32
  6. Step 6: Final answer
    x = 31,279.78

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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.