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Finding the Fourth Proportional to 9,989.70, 14,984.55 and 4,144.74

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Solution

The fourth proportional to 9,989.70, 14,984.55 and 4,144.74 is: 6,217.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.70 : 14,984.55 = 4,144.74 : x
  2. Step 2: Convert to fraction form
    9,989.70/14,984.55 = 4,144.74/x
  3. Step 3: Cross multiply
    9,989.70x = 14,984.55 × 4,144.74
  4. Step 4: Simplify right side
    9,989.70x = 62,107,063.77
  5. Step 5: Solve for x
    x = 62,107,063.77/9,989.70
  6. Step 6: Final answer
    x = 6,217.11

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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.