Home / 26,440.40-39,662.40-8,427.20

Finding the Fourth Proportional to 26,440.40, 39,662.40 and 8,427.20

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Solution

The fourth proportional to 26,440.40, 39,662.40 and 8,427.20 is: 12,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,440.40 : 39,662.40 = 8,427.20 : x
  2. Step 2: Convert to fraction form
    26,440.40/39,662.40 = 8,427.20/x
  3. Step 3: Cross multiply
    26,440.40x = 39,662.40 × 8,427.20
  4. Step 4: Simplify right side
    26,440.40x = 334,242,977.28
  5. Step 5: Solve for x
    x = 334,242,977.28/26,440.40
  6. Step 6: Final answer
    x = 12,641.37

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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.