Home / 11,988.18-16,530.75-8,401.95

Finding the Fourth Proportional to 11,988.18, 16,530.75 and 8,401.95

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Solution

The fourth proportional to 11,988.18, 16,530.75 and 8,401.95 is: 11,585.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.18 : 16,530.75 = 8,401.95 : x
  2. Step 2: Convert to fraction form
    11,988.18/16,530.75 = 8,401.95/x
  3. Step 3: Cross multiply
    11,988.18x = 16,530.75 × 8,401.95
  4. Step 4: Simplify right side
    11,988.18x = 138,890,534.96
  5. Step 5: Solve for x
    x = 138,890,534.96/11,988.18
  6. Step 6: Final answer
    x = 11,585.62

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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.