Home / 9,979.21-13,771.10-5,503.08

Finding the Fourth Proportional to 9,979.21, 13,771.10 and 5,503.08

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Solution

The fourth proportional to 9,979.21, 13,771.10 and 5,503.08 is: 7,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.21 : 13,771.10 = 5,503.08 : x
  2. Step 2: Convert to fraction form
    9,979.21/13,771.10 = 5,503.08/x
  3. Step 3: Cross multiply
    9,979.21x = 13,771.10 × 5,503.08
  4. Step 4: Simplify right side
    9,979.21x = 75,783,478.75
  5. Step 5: Solve for x
    x = 75,783,478.75/9,979.21
  6. Step 6: Final answer
    x = 7,594.14

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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.