Home / 12,915,576-17,819,948.16-8,990,933.76

Finding the Fourth Proportional to 12,915,576, 17,819,948.16 and 8,990,933.76

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Solution

The fourth proportional to 12,915,576, 17,819,948.16 and 8,990,933.76 is: 12,405,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915,576 : 17,819,948.16 = 8,990,933.76 : x
  2. Step 2: Convert to fraction form
    12,915,576/17,819,948.16 = 8,990,933.76/x
  3. Step 3: Cross multiply
    12,915,576x = 17,819,948.16 × 8,990,933.76
  4. Step 4: Simplify right side
    12,915,576x = 160,217,973,513,193.88
  5. Step 5: Solve for x
    x = 160,217,973,513,193.88/12,915,576
  6. Step 6: Final answer
    x = 12,405,019.61

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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.