Home / 12,921,703.12-17,832,069.90-7,120,692.46

Finding the Fourth Proportional to 12,921,703.12, 17,832,069.90 and 7,120,692.46

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Solution

The fourth proportional to 12,921,703.12, 17,832,069.90 and 7,120,692.46 is: 9,826,621.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,703.12 : 17,832,069.90 = 7,120,692.46 : x
  2. Step 2: Convert to fraction form
    12,921,703.12/17,832,069.90 = 7,120,692.46/x
  3. Step 3: Cross multiply
    12,921,703.12x = 17,832,069.90 × 7,120,692.46
  4. Step 4: Simplify right side
    12,921,703.12x = 126,976,685,683,122.94
  5. Step 5: Solve for x
    x = 126,976,685,683,122.94/12,921,703.12
  6. Step 6: Final answer
    x = 9,826,621.50

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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.