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Finding the Fourth Proportional to 26,989.86, 40,485 and 10,345.92

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Solution

The fourth proportional to 26,989.86, 40,485 and 10,345.92 is: 15,518.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,989.86 : 40,485 = 10,345.92 : x
  2. Step 2: Convert to fraction form
    26,989.86/40,485 = 10,345.92/x
  3. Step 3: Cross multiply
    26,989.86x = 40,485 × 10,345.92
  4. Step 4: Simplify right side
    26,989.86x = 418,854,571.20
  5. Step 5: Solve for x
    x = 418,854,571.20/26,989.86
  6. Step 6: Final answer
    x = 15,518.96

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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.