Home / 12,451.36-18,681.84-5,521.12

Finding the Fourth Proportional to 12,451.36, 18,681.84 and 5,521.12

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Solution

The fourth proportional to 12,451.36, 18,681.84 and 5,521.12 is: 8,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.36 : 18,681.84 = 5,521.12 : x
  2. Step 2: Convert to fraction form
    12,451.36/18,681.84 = 5,521.12/x
  3. Step 3: Cross multiply
    12,451.36x = 18,681.84 × 5,521.12
  4. Step 4: Simplify right side
    12,451.36x = 103,144,680.46
  5. Step 5: Solve for x
    x = 103,144,680.46/12,451.36
  6. Step 6: Final answer
    x = 8,283.81

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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.