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Finding the Fourth Proportional to 9,555.11, 14,319.67 and 7,213.20

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Solution

The fourth proportional to 9,555.11, 14,319.67 and 7,213.20 is: 10,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,555.11 : 14,319.67 = 7,213.20 : x
  2. Step 2: Convert to fraction form
    9,555.11/14,319.67 = 7,213.20/x
  3. Step 3: Cross multiply
    9,555.11x = 14,319.67 × 7,213.20
  4. Step 4: Simplify right side
    9,555.11x = 103,290,643.64
  5. Step 5: Solve for x
    x = 103,290,643.64/9,555.11
  6. Step 6: Final answer
    x = 10,809.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.