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Finding the Fourth Proportional to 26,661.32, 39,987.06 and 9,790.64

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Solution

The fourth proportional to 26,661.32, 39,987.06 and 9,790.64 is: 14,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,661.32 : 39,987.06 = 9,790.64 : x
  2. Step 2: Convert to fraction form
    26,661.32/39,987.06 = 9,790.64/x
  3. Step 3: Cross multiply
    26,661.32x = 39,987.06 × 9,790.64
  4. Step 4: Simplify right side
    26,661.32x = 391,498,909.12
  5. Step 5: Solve for x
    x = 391,498,909.12/26,661.32
  6. Step 6: Final answer
    x = 14,684.15

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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.