Home / 12,510.46-18,765.60-4,190.50

Finding the Fourth Proportional to 12,510.46, 18,765.60 and 4,190.50

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Solution

The fourth proportional to 12,510.46, 18,765.60 and 4,190.50 is: 6,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.46 : 18,765.60 = 4,190.50 : x
  2. Step 2: Convert to fraction form
    12,510.46/18,765.60 = 4,190.50/x
  3. Step 3: Cross multiply
    12,510.46x = 18,765.60 × 4,190.50
  4. Step 4: Simplify right side
    12,510.46x = 78,637,246.80
  5. Step 5: Solve for x
    x = 78,637,246.80/12,510.46
  6. Step 6: Final answer
    x = 6,285.72

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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.