Home / 12,439.92-18,642.40-10,583.68

Finding the Fourth Proportional to 12,439.92, 18,642.40 and 10,583.68

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Solution

The fourth proportional to 12,439.92, 18,642.40 and 10,583.68 is: 15,860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.92 : 18,642.40 = 10,583.68 : x
  2. Step 2: Convert to fraction form
    12,439.92/18,642.40 = 10,583.68/x
  3. Step 3: Cross multiply
    12,439.92x = 18,642.40 × 10,583.68
  4. Step 4: Simplify right side
    12,439.92x = 197,305,196.03
  5. Step 5: Solve for x
    x = 197,305,196.03/12,439.92
  6. Step 6: Final answer
    x = 15,860.65

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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.