Home / 9,979.50-13,771.80-5,503.41

Finding the Fourth Proportional to 9,979.50, 13,771.80 and 5,503.41

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Solution

The fourth proportional to 9,979.50, 13,771.80 and 5,503.41 is: 7,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.50 : 13,771.80 = 5,503.41 : x
  2. Step 2: Convert to fraction form
    9,979.50/13,771.80 = 5,503.41/x
  3. Step 3: Cross multiply
    9,979.50x = 13,771.80 × 5,503.41
  4. Step 4: Simplify right side
    9,979.50x = 75,791,861.84
  5. Step 5: Solve for x
    x = 75,791,861.84/9,979.50
  6. Step 6: Final answer
    x = 7,594.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.