Home / 21,840.20-30,115.66-14,754.32

Finding the Fourth Proportional to 21,840.20, 30,115.66 and 14,754.32

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Solution

The fourth proportional to 21,840.20, 30,115.66 and 14,754.32 is: 20,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.20 : 30,115.66 = 14,754.32 : x
  2. Step 2: Convert to fraction form
    21,840.20/30,115.66 = 14,754.32/x
  3. Step 3: Cross multiply
    21,840.20x = 30,115.66 × 14,754.32
  4. Step 4: Simplify right side
    21,840.20x = 444,336,084.65
  5. Step 5: Solve for x
    x = 444,336,084.65/21,840.20
  6. Step 6: Final answer
    x = 20,344.87

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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.