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Finding the Fourth Proportional to 26,661.52, 39,980.88 and 9,133.12

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Solution

The fourth proportional to 26,661.52, 39,980.88 and 9,133.12 is: 13,695.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,661.52 : 39,980.88 = 9,133.12 : x
  2. Step 2: Convert to fraction form
    26,661.52/39,980.88 = 9,133.12/x
  3. Step 3: Cross multiply
    26,661.52x = 39,980.88 × 9,133.12
  4. Step 4: Simplify right side
    26,661.52x = 365,150,174.75
  5. Step 5: Solve for x
    x = 365,150,174.75/26,661.52
  6. Step 6: Final answer
    x = 13,695.77

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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.