Home / 20,995.84-31,529.28-20,158.72

Finding the Fourth Proportional to 20,995.84, 31,529.28 and 20,158.72

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Solution

The fourth proportional to 20,995.84, 31,529.28 and 20,158.72 is: 30,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.84 : 31,529.28 = 20,158.72 : x
  2. Step 2: Convert to fraction form
    20,995.84/31,529.28 = 20,158.72/x
  3. Step 3: Cross multiply
    20,995.84x = 31,529.28 × 20,158.72
  4. Step 4: Simplify right side
    20,995.84x = 635,589,927.32
  5. Step 5: Solve for x
    x = 635,589,927.32/20,995.84
  6. Step 6: Final answer
    x = 30,272.18

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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.