Home / 9,906.42-13,670.96-5,430.08

Finding the Fourth Proportional to 9,906.42, 13,670.96 and 5,430.08

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Solution

The fourth proportional to 9,906.42, 13,670.96 and 5,430.08 is: 7,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.42 : 13,670.96 = 5,430.08 : x
  2. Step 2: Convert to fraction form
    9,906.42/13,670.96 = 5,430.08/x
  3. Step 3: Cross multiply
    9,906.42x = 13,670.96 × 5,430.08
  4. Step 4: Simplify right side
    9,906.42x = 74,234,351.70
  5. Step 5: Solve for x
    x = 74,234,351.70/9,906.42
  6. Step 6: Final answer
    x = 7,493.56

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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.