Home / 12,156,692.70-18,235,039.05-7,105,403.10

Finding the Fourth Proportional to 12,156,692.70, 18,235,039.05 and 7,105,403.10

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Solution

The fourth proportional to 12,156,692.70, 18,235,039.05 and 7,105,403.10 is: 10,658,104.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156,692.70 : 18,235,039.05 = 7,105,403.10 : x
  2. Step 2: Convert to fraction form
    12,156,692.70/18,235,039.05 = 7,105,403.10/x
  3. Step 3: Cross multiply
    12,156,692.70x = 18,235,039.05 × 7,105,403.10
  4. Step 4: Simplify right side
    12,156,692.70x = 129,567,302,994,491.05
  5. Step 5: Solve for x
    x = 129,567,302,994,491.05/12,156,692.70
  6. Step 6: Final answer
    x = 10,658,104.65

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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.