Home / 13,956.28-20,927.80-5,411.72

Finding the Fourth Proportional to 13,956.28, 20,927.80 and 5,411.72

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Solution

The fourth proportional to 13,956.28, 20,927.80 and 5,411.72 is: 8,115.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.28 : 20,927.80 = 5,411.72 : x
  2. Step 2: Convert to fraction form
    13,956.28/20,927.80 = 5,411.72/x
  3. Step 3: Cross multiply
    13,956.28x = 20,927.80 × 5,411.72
  4. Step 4: Simplify right side
    13,956.28x = 113,255,275.65
  5. Step 5: Solve for x
    x = 113,255,275.65/13,956.28
  6. Step 6: Final answer
    x = 8,115.01

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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.