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Finding the Fourth Proportional to 26,509.67, 39,763.46 and 8,979.50

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Solution

The fourth proportional to 26,509.67, 39,763.46 and 8,979.50 is: 13,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,509.67 : 39,763.46 = 8,979.50 : x
  2. Step 2: Convert to fraction form
    26,509.67/39,763.46 = 8,979.50/x
  3. Step 3: Cross multiply
    26,509.67x = 39,763.46 × 8,979.50
  4. Step 4: Simplify right side
    26,509.67x = 357,055,812.70
  5. Step 5: Solve for x
    x = 357,055,812.70/26,509.67
  6. Step 6: Final answer
    x = 13,468.89

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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.