Home / 12,288,632.60-18,446,945.70-7,242,786.20

Finding the Fourth Proportional to 12,288,632.60, 18,446,945.70 and 7,242,786.20

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Solution

The fourth proportional to 12,288,632.60, 18,446,945.70 and 7,242,786.20 is: 10,872,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288,632.60 : 18,446,945.70 = 7,242,786.20 : x
  2. Step 2: Convert to fraction form
    12,288,632.60/18,446,945.70 = 7,242,786.20/x
  3. Step 3: Cross multiply
    12,288,632.60x = 18,446,945.70 × 7,242,786.20
  4. Step 4: Simplify right side
    12,288,632.60x = 133,607,283,748,109.34
  5. Step 5: Solve for x
    x = 133,607,283,748,109.34/12,288,632.60
  6. Step 6: Final answer
    x = 10,872,428.86

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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.