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Finding the Fourth Proportional to 9,999.63, 15,008.76 and 5,325.12

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Solution

The fourth proportional to 9,999.63, 15,008.76 and 5,325.12 is: 7,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.63 : 15,008.76 = 5,325.12 : x
  2. Step 2: Convert to fraction form
    9,999.63/15,008.76 = 5,325.12/x
  3. Step 3: Cross multiply
    9,999.63x = 15,008.76 × 5,325.12
  4. Step 4: Simplify right side
    9,999.63x = 79,923,448.05
  5. Step 5: Solve for x
    x = 79,923,448.05/9,999.63
  6. Step 6: Final answer
    x = 7,992.64

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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.