Home / 12,631.80-18,920.13-10,415.64

Finding the Fourth Proportional to 12,631.80, 18,920.13 and 10,415.64

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Solution

The fourth proportional to 12,631.80, 18,920.13 and 10,415.64 is: 15,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.80 : 18,920.13 = 10,415.64 : x
  2. Step 2: Convert to fraction form
    12,631.80/18,920.13 = 10,415.64/x
  3. Step 3: Cross multiply
    12,631.80x = 18,920.13 × 10,415.64
  4. Step 4: Simplify right side
    12,631.80x = 197,065,262.83
  5. Step 5: Solve for x
    x = 197,065,262.83/12,631.80
  6. Step 6: Final answer
    x = 15,600.73

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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.