Home / 10,188.80-15,285.40-3,168.68

Finding the Fourth Proportional to 10,188.80, 15,285.40 and 3,168.68

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Solution

The fourth proportional to 10,188.80, 15,285.40 and 3,168.68 is: 4,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,188.80 : 15,285.40 = 3,168.68 : x
  2. Step 2: Convert to fraction form
    10,188.80/15,285.40 = 3,168.68/x
  3. Step 3: Cross multiply
    10,188.80x = 15,285.40 × 3,168.68
  4. Step 4: Simplify right side
    10,188.80x = 48,434,510.98
  5. Step 5: Solve for x
    x = 48,434,510.98/10,188.80
  6. Step 6: Final answer
    x = 4,753.70

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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.