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Finding the Fourth Proportional to 9,574.20, 14,345.10 and 7,921.80

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Solution

The fourth proportional to 9,574.20, 14,345.10 and 7,921.80 is: 11,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,574.20 : 14,345.10 = 7,921.80 : x
  2. Step 2: Convert to fraction form
    9,574.20/14,345.10 = 7,921.80/x
  3. Step 3: Cross multiply
    9,574.20x = 14,345.10 × 7,921.80
  4. Step 4: Simplify right side
    9,574.20x = 113,639,013.18
  5. Step 5: Solve for x
    x = 113,639,013.18/9,574.20
  6. Step 6: Final answer
    x = 11,869.30

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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.