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Finding the Fourth Proportional to 26,188.32, 39,288.72 and 7,720.32

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Solution

The fourth proportional to 26,188.32, 39,288.72 and 7,720.32 is: 11,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,188.32 : 39,288.72 = 7,720.32 : x
  2. Step 2: Convert to fraction form
    26,188.32/39,288.72 = 7,720.32/x
  3. Step 3: Cross multiply
    26,188.32x = 39,288.72 × 7,720.32
  4. Step 4: Simplify right side
    26,188.32x = 303,321,490.79
  5. Step 5: Solve for x
    x = 303,321,490.79/26,188.32
  6. Step 6: Final answer
    x = 11,582.32

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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.