Home / 12,389.12-18,581.04-4,070.12

Finding the Fourth Proportional to 12,389.12, 18,581.04 and 4,070.12

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Solution

The fourth proportional to 12,389.12, 18,581.04 and 4,070.12 is: 6,104.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.12 : 18,581.04 = 4,070.12 : x
  2. Step 2: Convert to fraction form
    12,389.12/18,581.04 = 4,070.12/x
  3. Step 3: Cross multiply
    12,389.12x = 18,581.04 × 4,070.12
  4. Step 4: Simplify right side
    12,389.12x = 75,627,062.52
  5. Step 5: Solve for x
    x = 75,627,062.52/12,389.12
  6. Step 6: Final answer
    x = 6,104.31

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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.