Home / 12,510.18-18,765.49-4,188.64

Finding the Fourth Proportional to 12,510.18, 18,765.49 and 4,188.64

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Solution

The fourth proportional to 12,510.18, 18,765.49 and 4,188.64 is: 6,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.18 : 18,765.49 = 4,188.64 : x
  2. Step 2: Convert to fraction form
    12,510.18/18,765.49 = 4,188.64/x
  3. Step 3: Cross multiply
    12,510.18x = 18,765.49 × 4,188.64
  4. Step 4: Simplify right side
    12,510.18x = 78,601,882.03
  5. Step 5: Solve for x
    x = 78,601,882.03/12,510.18
  6. Step 6: Final answer
    x = 6,283.03

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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.