Home / 11,820.59-16,311.65-6,515.43

Finding the Fourth Proportional to 11,820.59, 16,311.65 and 6,515.43

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Solution

The fourth proportional to 11,820.59, 16,311.65 and 6,515.43 is: 8,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.59 : 16,311.65 = 6,515.43 : x
  2. Step 2: Convert to fraction form
    11,820.59/16,311.65 = 6,515.43/x
  3. Step 3: Cross multiply
    11,820.59x = 16,311.65 × 6,515.43
  4. Step 4: Simplify right side
    11,820.59x = 106,277,381.18
  5. Step 5: Solve for x
    x = 106,277,381.18/11,820.59
  6. Step 6: Final answer
    x = 8,990.87

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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.