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Finding the Fourth Proportional to 15,550.58, 21,459.92 and 8,476.98

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Solution

The fourth proportional to 15,550.58, 21,459.92 and 8,476.98 is: 11,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.58 : 21,459.92 = 8,476.98 : x
  2. Step 2: Convert to fraction form
    15,550.58/21,459.92 = 8,476.98/x
  3. Step 3: Cross multiply
    15,550.58x = 21,459.92 × 8,476.98
  4. Step 4: Simplify right side
    15,550.58x = 181,915,312.64
  5. Step 5: Solve for x
    x = 181,915,312.64/15,550.58
  6. Step 6: Final answer
    x = 11,698.30

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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.