Home / 12,855.78-19,285.14-4,534.02

Finding the Fourth Proportional to 12,855.78, 19,285.14 and 4,534.02

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Solution

The fourth proportional to 12,855.78, 19,285.14 and 4,534.02 is: 6,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.78 : 19,285.14 = 4,534.02 : x
  2. Step 2: Convert to fraction form
    12,855.78/19,285.14 = 4,534.02/x
  3. Step 3: Cross multiply
    12,855.78x = 19,285.14 × 4,534.02
  4. Step 4: Simplify right side
    12,855.78x = 87,439,210.46
  5. Step 5: Solve for x
    x = 87,439,210.46/12,855.78
  6. Step 6: Final answer
    x = 6,801.55

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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.