Home / 12,869.31-19,293.66-8,454.45

Finding the Fourth Proportional to 12,869.31, 19,293.66 and 8,454.45

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Solution

The fourth proportional to 12,869.31, 19,293.66 and 8,454.45 is: 12,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.31 : 19,293.66 = 8,454.45 : x
  2. Step 2: Convert to fraction form
    12,869.31/19,293.66 = 8,454.45/x
  3. Step 3: Cross multiply
    12,869.31x = 19,293.66 × 8,454.45
  4. Step 4: Simplify right side
    12,869.31x = 163,117,283.79
  5. Step 5: Solve for x
    x = 163,117,283.79/12,869.31
  6. Step 6: Final answer
    x = 12,674.91

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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.