Home / 13,390.23-18,479.04-8,084.04

Finding the Fourth Proportional to 13,390.23, 18,479.04 and 8,084.04

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Solution

The fourth proportional to 13,390.23, 18,479.04 and 8,084.04 is: 11,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.23 : 18,479.04 = 8,084.04 : x
  2. Step 2: Convert to fraction form
    13,390.23/18,479.04 = 8,084.04/x
  3. Step 3: Cross multiply
    13,390.23x = 18,479.04 × 8,084.04
  4. Step 4: Simplify right side
    13,390.23x = 149,385,298.52
  5. Step 5: Solve for x
    x = 149,385,298.52/13,390.23
  6. Step 6: Final answer
    x = 11,156.29

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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.