Home / 9,979.28-13,771.48-5,503.20

Finding the Fourth Proportional to 9,979.28, 13,771.48 and 5,503.20

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Solution

The fourth proportional to 9,979.28, 13,771.48 and 5,503.20 is: 7,594.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.28 : 13,771.48 = 5,503.20 : x
  2. Step 2: Convert to fraction form
    9,979.28/13,771.48 = 5,503.20/x
  3. Step 3: Cross multiply
    9,979.28x = 13,771.48 × 5,503.20
  4. Step 4: Simplify right side
    9,979.28x = 75,787,208.74
  5. Step 5: Solve for x
    x = 75,787,208.74/9,979.28
  6. Step 6: Final answer
    x = 7,594.46

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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.