Home / 15,550.39-21,459.85-8,476.80

Finding the Fourth Proportional to 15,550.39, 21,459.85 and 8,476.80

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Solution

The fourth proportional to 15,550.39, 21,459.85 and 8,476.80 is: 11,698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.39 : 21,459.85 = 8,476.80 : x
  2. Step 2: Convert to fraction form
    15,550.39/21,459.85 = 8,476.80/x
  3. Step 3: Cross multiply
    15,550.39x = 21,459.85 × 8,476.80
  4. Step 4: Simplify right side
    15,550.39x = 181,910,867.75
  5. Step 5: Solve for x
    x = 181,910,867.75/15,550.39
  6. Step 6: Final answer
    x = 11,698.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.