Home / 12,854.68-19,288.40-8,685.54

Finding the Fourth Proportional to 12,854.68, 19,288.40 and 8,685.54

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Solution

The fourth proportional to 12,854.68, 19,288.40 and 8,685.54 is: 13,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854.68 : 19,288.40 = 8,685.54 : x
  2. Step 2: Convert to fraction form
    12,854.68/19,288.40 = 8,685.54/x
  3. Step 3: Cross multiply
    12,854.68x = 19,288.40 × 8,685.54
  4. Step 4: Simplify right side
    12,854.68x = 167,530,126.31
  5. Step 5: Solve for x
    x = 167,530,126.31/12,854.68
  6. Step 6: Final answer
    x = 13,032.62

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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.