Home / 12,760,905.90-19,155,355.65-7,974,000.30

Finding the Fourth Proportional to 12,760,905.90, 19,155,355.65 and 7,974,000.30

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Solution

The fourth proportional to 12,760,905.90, 19,155,355.65 and 7,974,000.30 is: 11,969,746.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760,905.90 : 19,155,355.65 = 7,974,000.30 : x
  2. Step 2: Convert to fraction form
    12,760,905.90/19,155,355.65 = 7,974,000.30/x
  3. Step 3: Cross multiply
    12,760,905.90x = 19,155,355.65 × 7,974,000.30
  4. Step 4: Simplify right side
    12,760,905.90x = 152,744,811,699,706.69
  5. Step 5: Solve for x
    x = 152,744,811,699,706.69/12,760,905.90
  6. Step 6: Final answer
    x = 11,969,746.73

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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.