Home / 11,235.75-16,768.15-9,990.17

Finding the Fourth Proportional to 11,235.75, 16,768.15 and 9,990.17

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Solution

The fourth proportional to 11,235.75, 16,768.15 and 9,990.17 is: 14,909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.75 : 16,768.15 = 9,990.17 : x
  2. Step 2: Convert to fraction form
    11,235.75/16,768.15 = 9,990.17/x
  3. Step 3: Cross multiply
    11,235.75x = 16,768.15 × 9,990.17
  4. Step 4: Simplify right side
    11,235.75x = 167,516,623.15
  5. Step 5: Solve for x
    x = 167,516,623.15/11,235.75
  6. Step 6: Final answer
    x = 14,909.26

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.