Home / 26,016.80-39,025.20-12,878.40

Finding the Fourth Proportional to 26,016.80, 39,025.20 and 12,878.40

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Solution

The fourth proportional to 26,016.80, 39,025.20 and 12,878.40 is: 19,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,016.80 : 39,025.20 = 12,878.40 : x
  2. Step 2: Convert to fraction form
    26,016.80/39,025.20 = 12,878.40/x
  3. Step 3: Cross multiply
    26,016.80x = 39,025.20 × 12,878.40
  4. Step 4: Simplify right side
    26,016.80x = 502,582,135.68
  5. Step 5: Solve for x
    x = 502,582,135.68/26,016.80
  6. Step 6: Final answer
    x = 19,317.60

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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.