Home / 12,920,605.65-17,831,230.04-7,119,385.85

Finding the Fourth Proportional to 12,920,605.65, 17,831,230.04 and 7,119,385.85

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Solution

The fourth proportional to 12,920,605.65, 17,831,230.04 and 7,119,385.85 is: 9,825,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,605.65 : 17,831,230.04 = 7,119,385.85 : x
  2. Step 2: Convert to fraction form
    12,920,605.65/17,831,230.04 = 7,119,385.85/x
  3. Step 3: Cross multiply
    12,920,605.65x = 17,831,230.04 × 7,119,385.85
  4. Step 4: Simplify right side
    12,920,605.65x = 126,947,406,897,247.48
  5. Step 5: Solve for x
    x = 126,947,406,897,247.48/12,920,605.65
  6. Step 6: Final answer
    x = 9,825,190.11

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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.