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Finding the Fourth Proportional to 9,999.86, 15,000.29 and 4,453.59

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Solution

The fourth proportional to 9,999.86, 15,000.29 and 4,453.59 is: 6,680.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.86 : 15,000.29 = 4,453.59 : x
  2. Step 2: Convert to fraction form
    9,999.86/15,000.29 = 4,453.59/x
  3. Step 3: Cross multiply
    9,999.86x = 15,000.29 × 4,453.59
  4. Step 4: Simplify right side
    9,999.86x = 66,805,119.27
  5. Step 5: Solve for x
    x = 66,805,119.27/9,999.86
  6. Step 6: Final answer
    x = 6,680.61

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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.