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Finding the Fourth Proportional to 26,878.80, 40,318.48 and 9,349.20

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Solution

The fourth proportional to 26,878.80, 40,318.48 and 9,349.20 is: 14,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,878.80 : 40,318.48 = 9,349.20 : x
  2. Step 2: Convert to fraction form
    26,878.80/40,318.48 = 9,349.20/x
  3. Step 3: Cross multiply
    26,878.80x = 40,318.48 × 9,349.20
  4. Step 4: Simplify right side
    26,878.80x = 376,945,533.22
  5. Step 5: Solve for x
    x = 376,945,533.22/26,878.80
  6. Step 6: Final answer
    x = 14,023.90

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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.