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Finding the Fourth Proportional to 9,422.80, 14,119.80 and 8,904.40

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Solution

The fourth proportional to 9,422.80, 14,119.80 and 8,904.40 is: 13,342.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,422.80 : 14,119.80 = 8,904.40 : x
  2. Step 2: Convert to fraction form
    9,422.80/14,119.80 = 8,904.40/x
  3. Step 3: Cross multiply
    9,422.80x = 14,119.80 × 8,904.40
  4. Step 4: Simplify right side
    9,422.80x = 125,728,347.12
  5. Step 5: Solve for x
    x = 125,728,347.12/9,422.80
  6. Step 6: Final answer
    x = 13,342.99

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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.