Home / 12,868.50-19,335.02-8,190.53

Finding the Fourth Proportional to 12,868.50, 19,335.02 and 8,190.53

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Solution

The fourth proportional to 12,868.50, 19,335.02 and 8,190.53 is: 12,306.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.50 : 19,335.02 = 8,190.53 : x
  2. Step 2: Convert to fraction form
    12,868.50/19,335.02 = 8,190.53/x
  3. Step 3: Cross multiply
    12,868.50x = 19,335.02 × 8,190.53
  4. Step 4: Simplify right side
    12,868.50x = 158,364,061.36
  5. Step 5: Solve for x
    x = 158,364,061.36/12,868.50
  6. Step 6: Final answer
    x = 12,306.33

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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.