Home / 12,587.00-18,881.84-4,272.95

Finding the Fourth Proportional to 12,587.00, 18,881.84 and 4,272.95

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Solution

The fourth proportional to 12,587.00, 18,881.84 and 4,272.95 is: 6,409.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.00 : 18,881.84 = 4,272.95 : x
  2. Step 2: Convert to fraction form
    12,587.00/18,881.84 = 4,272.95/x
  3. Step 3: Cross multiply
    12,587.00x = 18,881.84 × 4,272.95
  4. Step 4: Simplify right side
    12,587.00x = 80,681,216.11
  5. Step 5: Solve for x
    x = 80,681,216.11/12,587.00
  6. Step 6: Final answer
    x = 6,409.89

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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.