Home / 9,908.40-14,857.80-5,521.20

Finding the Fourth Proportional to 9,908.40, 14,857.80 and 5,521.20

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Solution

The fourth proportional to 9,908.40, 14,857.80 and 5,521.20 is: 8,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.40 : 14,857.80 = 5,521.20 : x
  2. Step 2: Convert to fraction form
    9,908.40/14,857.80 = 5,521.20/x
  3. Step 3: Cross multiply
    9,908.40x = 14,857.80 × 5,521.20
  4. Step 4: Simplify right side
    9,908.40x = 82,032,885.36
  5. Step 5: Solve for x
    x = 82,032,885.36/9,908.40
  6. Step 6: Final answer
    x = 8,279.13

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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.