Home / 14,425.88-21,638.81-5,191.88

Finding the Fourth Proportional to 14,425.88, 21,638.81 and 5,191.88

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Solution

The fourth proportional to 14,425.88, 21,638.81 and 5,191.88 is: 7,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.88 : 21,638.81 = 5,191.88 : x
  2. Step 2: Convert to fraction form
    14,425.88/21,638.81 = 5,191.88/x
  3. Step 3: Cross multiply
    14,425.88x = 21,638.81 × 5,191.88
  4. Step 4: Simplify right side
    14,425.88x = 112,346,009.65
  5. Step 5: Solve for x
    x = 112,346,009.65/14,425.88
  6. Step 6: Final answer
    x = 7,787.81

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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.