Home / 19,760,471.72-29,674,628.25-12,128,929.76

Finding the Fourth Proportional to 19,760,471.72, 29,674,628.25 and 12,128,929.76

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Solution

The fourth proportional to 19,760,471.72, 29,674,628.25 and 12,128,929.76 is: 18,214,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760,471.72 : 29,674,628.25 = 12,128,929.76 : x
  2. Step 2: Convert to fraction form
    19,760,471.72/29,674,628.25 = 12,128,929.76/x
  3. Step 3: Cross multiply
    19,760,471.72x = 29,674,628.25 × 12,128,929.76
  4. Step 4: Simplify right side
    19,760,471.72x = 359,921,481,698,361.69
  5. Step 5: Solve for x
    x = 359,921,481,698,361.69/19,760,471.72
  6. Step 6: Final answer
    x = 18,214,215.07

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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.