Home / 11,780.12-16,256.28-6,402.42

Finding the Fourth Proportional to 11,780.12, 16,256.28 and 6,402.42

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Solution

The fourth proportional to 11,780.12, 16,256.28 and 6,402.42 is: 8,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.12 : 16,256.28 = 6,402.42 : x
  2. Step 2: Convert to fraction form
    11,780.12/16,256.28 = 6,402.42/x
  3. Step 3: Cross multiply
    11,780.12x = 16,256.28 × 6,402.42
  4. Step 4: Simplify right side
    11,780.12x = 104,079,532.20
  5. Step 5: Solve for x
    x = 104,079,532.20/11,780.12
  6. Step 6: Final answer
    x = 8,835.19

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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.