Home / 12,928,157.10-17,840,910.69-7,126,811.55

Finding the Fourth Proportional to 12,928,157.10, 17,840,910.69 and 7,126,811.55

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Solution

The fourth proportional to 12,928,157.10, 17,840,910.69 and 7,126,811.55 is: 9,835,029.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,157.10 : 17,840,910.69 = 7,126,811.55 : x
  2. Step 2: Convert to fraction form
    12,928,157.10/17,840,910.69 = 7,126,811.55/x
  3. Step 3: Cross multiply
    12,928,157.10x = 17,840,910.69 × 7,126,811.55
  4. Step 4: Simplify right side
    12,928,157.10x = 127,148,808,368,010.47
  5. Step 5: Solve for x
    x = 127,148,808,368,010.47/12,928,157.10
  6. Step 6: Final answer
    x = 9,835,029.65

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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.