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Finding the Fourth Proportional to 9,999.74, 14,989.65 and 4,725.41

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Solution

The fourth proportional to 9,999.74, 14,989.65 and 4,725.41 is: 7,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.74 : 14,989.65 = 4,725.41 : x
  2. Step 2: Convert to fraction form
    9,999.74/14,989.65 = 4,725.41/x
  3. Step 3: Cross multiply
    9,999.74x = 14,989.65 × 4,725.41
  4. Step 4: Simplify right side
    9,999.74x = 70,832,297.20
  5. Step 5: Solve for x
    x = 70,832,297.20/9,999.74
  6. Step 6: Final answer
    x = 7,083.42

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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.