Home / 26,257.80-39,386.70-8,728.20

Finding the Fourth Proportional to 26,257.80, 39,386.70 and 8,728.20

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Solution

The fourth proportional to 26,257.80, 39,386.70 and 8,728.20 is: 13,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,257.80 : 39,386.70 = 8,728.20 : x
  2. Step 2: Convert to fraction form
    26,257.80/39,386.70 = 8,728.20/x
  3. Step 3: Cross multiply
    26,257.80x = 39,386.70 × 8,728.20
  4. Step 4: Simplify right side
    26,257.80x = 343,774,994.94
  5. Step 5: Solve for x
    x = 343,774,994.94/26,257.80
  6. Step 6: Final answer
    x = 13,092.30

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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.