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Finding the Fourth Proportional to 12,873.95, 19,332.39 and 8,684.20

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Solution

The fourth proportional to 12,873.95, 19,332.39 and 8,684.20 is: 13,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.95 : 19,332.39 = 8,684.20 : x
  2. Step 2: Convert to fraction form
    12,873.95/19,332.39 = 8,684.20/x
  3. Step 3: Cross multiply
    12,873.95x = 19,332.39 × 8,684.20
  4. Step 4: Simplify right side
    12,873.95x = 167,886,244.58
  5. Step 5: Solve for x
    x = 167,886,244.58/12,873.95
  6. Step 6: Final answer
    x = 13,040.77

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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.