Home / 13,281.24-19,920.24-5,489.04

Finding the Fourth Proportional to 13,281.24, 19,920.24 and 5,489.04

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Solution

The fourth proportional to 13,281.24, 19,920.24 and 5,489.04 is: 8,232.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.24 : 19,920.24 = 5,489.04 : x
  2. Step 2: Convert to fraction form
    13,281.24/19,920.24 = 5,489.04/x
  3. Step 3: Cross multiply
    13,281.24x = 19,920.24 × 5,489.04
  4. Step 4: Simplify right side
    13,281.24x = 109,342,994.17
  5. Step 5: Solve for x
    x = 109,342,994.17/13,281.24
  6. Step 6: Final answer
    x = 8,232.89

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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.