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Finding the Fourth Proportional to 26,356.80, 39,550.78 and 9,728.40

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Solution

The fourth proportional to 26,356.80, 39,550.78 and 9,728.40 is: 14,598.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,356.80 : 39,550.78 = 9,728.40 : x
  2. Step 2: Convert to fraction form
    26,356.80/39,550.78 = 9,728.40/x
  3. Step 3: Cross multiply
    26,356.80x = 39,550.78 × 9,728.40
  4. Step 4: Simplify right side
    26,356.80x = 384,765,808.15
  5. Step 5: Solve for x
    x = 384,765,808.15/26,356.80
  6. Step 6: Final answer
    x = 14,598.35

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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.