Home / 12,866.74-19,332.39-8,188.78

Finding the Fourth Proportional to 12,866.74, 19,332.39 and 8,188.78

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Solution

The fourth proportional to 12,866.74, 19,332.39 and 8,188.78 is: 12,303.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.74 : 19,332.39 = 8,188.78 : x
  2. Step 2: Convert to fraction form
    12,866.74/19,332.39 = 8,188.78/x
  3. Step 3: Cross multiply
    12,866.74x = 19,332.39 × 8,188.78
  4. Step 4: Simplify right side
    12,866.74x = 158,308,688.58
  5. Step 5: Solve for x
    x = 158,308,688.58/12,866.74
  6. Step 6: Final answer
    x = 12,303.71

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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.