Home / 11,712.90-16,164.20-6,407.72

Finding the Fourth Proportional to 11,712.90, 16,164.20 and 6,407.72

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Solution

The fourth proportional to 11,712.90, 16,164.20 and 6,407.72 is: 8,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.90 : 16,164.20 = 6,407.72 : x
  2. Step 2: Convert to fraction form
    11,712.90/16,164.20 = 6,407.72/x
  3. Step 3: Cross multiply
    11,712.90x = 16,164.20 × 6,407.72
  4. Step 4: Simplify right side
    11,712.90x = 103,575,554.76
  5. Step 5: Solve for x
    x = 103,575,554.76/11,712.90
  6. Step 6: Final answer
    x = 8,842.86

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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.