Home / 12,789,407.20-19,177,112.40-5,207,807.20

Finding the Fourth Proportional to 12,789,407.20, 19,177,112.40 and 5,207,807.20

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Solution

The fourth proportional to 12,789,407.20, 19,177,112.40 and 5,207,807.20 is: 7,808,861.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789,407.20 : 19,177,112.40 = 5,207,807.20 : x
  2. Step 2: Convert to fraction form
    12,789,407.20/19,177,112.40 = 5,207,807.20/x
  3. Step 3: Cross multiply
    12,789,407.20x = 19,177,112.40 × 5,207,807.20
  4. Step 4: Simplify right side
    12,789,407.20x = 99,870,704,031,929.28
  5. Step 5: Solve for x
    x = 99,870,704,031,929.28/12,789,407.20
  6. Step 6: Final answer
    x = 7,808,861.07

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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.