Home / 12,586.20-18,871.08-7,040.16

Finding the Fourth Proportional to 12,586.20, 18,871.08 and 7,040.16

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Solution

The fourth proportional to 12,586.20, 18,871.08 and 7,040.16 is: 10,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.20 : 18,871.08 = 7,040.16 : x
  2. Step 2: Convert to fraction form
    12,586.20/18,871.08 = 7,040.16/x
  3. Step 3: Cross multiply
    12,586.20x = 18,871.08 × 7,040.16
  4. Step 4: Simplify right side
    12,586.20x = 132,855,422.57
  5. Step 5: Solve for x
    x = 132,855,422.57/12,586.20
  6. Step 6: Final answer
    x = 10,555.64

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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.