Home / 9,811.18-13,539.72-7,157.62

Finding the Fourth Proportional to 9,811.18, 13,539.72 and 7,157.62

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Solution

The fourth proportional to 9,811.18, 13,539.72 and 7,157.62 is: 9,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.18 : 13,539.72 = 7,157.62 : x
  2. Step 2: Convert to fraction form
    9,811.18/13,539.72 = 7,157.62/x
  3. Step 3: Cross multiply
    9,811.18x = 13,539.72 × 7,157.62
  4. Step 4: Simplify right side
    9,811.18x = 96,912,170.67
  5. Step 5: Solve for x
    x = 96,912,170.67/9,811.18
  6. Step 6: Final answer
    x = 9,877.73

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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.