Home / 12,285.36-18,428.67-3,521.58

Finding the Fourth Proportional to 12,285.36, 18,428.67 and 3,521.58

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Solution

The fourth proportional to 12,285.36, 18,428.67 and 3,521.58 is: 5,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.36 : 18,428.67 = 3,521.58 : x
  2. Step 2: Convert to fraction form
    12,285.36/18,428.67 = 3,521.58/x
  3. Step 3: Cross multiply
    12,285.36x = 18,428.67 × 3,521.58
  4. Step 4: Simplify right side
    12,285.36x = 64,898,035.70
  5. Step 5: Solve for x
    x = 64,898,035.70/12,285.36
  6. Step 6: Final answer
    x = 5,282.55

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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.