Home / 12,928,145.85-17,840,895.17-7,126,800.30

Finding the Fourth Proportional to 12,928,145.85, 17,840,895.17 and 7,126,800.30

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Solution

The fourth proportional to 12,928,145.85, 17,840,895.17 and 7,126,800.30 is: 9,835,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,145.85 : 17,840,895.17 = 7,126,800.30 : x
  2. Step 2: Convert to fraction form
    12,928,145.85/17,840,895.17 = 7,126,800.30/x
  3. Step 3: Cross multiply
    12,928,145.85x = 17,840,895.17 × 7,126,800.30
  4. Step 4: Simplify right side
    12,928,145.85x = 127,148,497,014,190.55
  5. Step 5: Solve for x
    x = 127,148,497,014,190.55/12,928,145.85
  6. Step 6: Final answer
    x = 9,835,014.12

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1.5x scale

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.