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Finding the Fourth Proportional to 26,400.54, 39,606.99 and 7,680.99

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Solution

The fourth proportional to 26,400.54, 39,606.99 and 7,680.99 is: 11,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,400.54 : 39,606.99 = 7,680.99 : x
  2. Step 2: Convert to fraction form
    26,400.54/39,606.99 = 7,680.99/x
  3. Step 3: Cross multiply
    26,400.54x = 39,606.99 × 7,680.99
  4. Step 4: Simplify right side
    26,400.54x = 304,220,894.12
  5. Step 5: Solve for x
    x = 304,220,894.12/26,400.54
  6. Step 6: Final answer
    x = 11,523.28

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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.