Home / 26,431.60-39,647.40-9,786.10

Finding the Fourth Proportional to 26,431.60, 39,647.40 and 9,786.10

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Solution

The fourth proportional to 26,431.60, 39,647.40 and 9,786.10 is: 14,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.60 : 39,647.40 = 9,786.10 : x
  2. Step 2: Convert to fraction form
    26,431.60/39,647.40 = 9,786.10/x
  3. Step 3: Cross multiply
    26,431.60x = 39,647.40 × 9,786.10
  4. Step 4: Simplify right side
    26,431.60x = 387,993,421.14
  5. Step 5: Solve for x
    x = 387,993,421.14/26,431.60
  6. Step 6: Final answer
    x = 14,679.15

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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.