Home / 11,394.40-17,077.20-8,312.80

Finding the Fourth Proportional to 11,394.40, 17,077.20 and 8,312.80

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Solution

The fourth proportional to 11,394.40, 17,077.20 and 8,312.80 is: 12,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.40 : 17,077.20 = 8,312.80 : x
  2. Step 2: Convert to fraction form
    11,394.40/17,077.20 = 8,312.80/x
  3. Step 3: Cross multiply
    11,394.40x = 17,077.20 × 8,312.80
  4. Step 4: Simplify right side
    11,394.40x = 141,959,348.16
  5. Step 5: Solve for x
    x = 141,959,348.16/11,394.40
  6. Step 6: Final answer
    x = 12,458.69

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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.