Home / 12,190,191.12-16,820,094.89-7,227,715.79

Finding the Fourth Proportional to 12,190,191.12, 16,820,094.89 and 7,227,715.79

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Solution

The fourth proportional to 12,190,191.12, 16,820,094.89 and 7,227,715.79 is: 9,972,843.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190,191.12 : 16,820,094.89 = 7,227,715.79 : x
  2. Step 2: Convert to fraction form
    12,190,191.12/16,820,094.89 = 7,227,715.79/x
  3. Step 3: Cross multiply
    12,190,191.12x = 16,820,094.89 × 7,227,715.79
  4. Step 4: Simplify right side
    12,190,191.12x = 121,570,865,485,870.83
  5. Step 5: Solve for x
    x = 121,570,865,485,870.83/12,190,191.12
  6. Step 6: Final answer
    x = 9,972,843.27

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Double scale
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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.