Home / 12,862.80-19,290.60-4,100.40

Finding the Fourth Proportional to 12,862.80, 19,290.60 and 4,100.40

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Solution

The fourth proportional to 12,862.80, 19,290.60 and 4,100.40 is: 6,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.80 : 19,290.60 = 4,100.40 : x
  2. Step 2: Convert to fraction form
    12,862.80/19,290.60 = 4,100.40/x
  3. Step 3: Cross multiply
    12,862.80x = 19,290.60 × 4,100.40
  4. Step 4: Simplify right side
    12,862.80x = 79,099,176.24
  5. Step 5: Solve for x
    x = 79,099,176.24/12,862.80
  6. Step 6: Final answer
    x = 6,149.45

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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.