Home / 12,510.11-18,765.40-4,188.58

Finding the Fourth Proportional to 12,510.11, 18,765.40 and 4,188.58

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Solution

The fourth proportional to 12,510.11, 18,765.40 and 4,188.58 is: 6,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.11 : 18,765.40 = 4,188.58 : x
  2. Step 2: Convert to fraction form
    12,510.11/18,765.40 = 4,188.58/x
  3. Step 3: Cross multiply
    12,510.11x = 18,765.40 × 4,188.58
  4. Step 4: Simplify right side
    12,510.11x = 78,600,379.13
  5. Step 5: Solve for x
    x = 78,600,379.13/12,510.11
  6. Step 6: Final answer
    x = 6,282.95

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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.