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Finding the Fourth Proportional to 9,999.70, 14,999.56 and 7,404.46

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Solution

The fourth proportional to 9,999.70, 14,999.56 and 7,404.46 is: 11,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.70 : 14,999.56 = 7,404.46 : x
  2. Step 2: Convert to fraction form
    9,999.70/14,999.56 = 7,404.46/x
  3. Step 3: Cross multiply
    9,999.70x = 14,999.56 × 7,404.46
  4. Step 4: Simplify right side
    9,999.70x = 111,063,642.04
  5. Step 5: Solve for x
    x = 111,063,642.04/9,999.70
  6. Step 6: Final answer
    x = 11,106.70

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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.