Home / 20,564,901.68-28,378,471.92-11,862,556.56

Finding the Fourth Proportional to 20,564,901.68, 28,378,471.92 and 11,862,556.56

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Solution

The fourth proportional to 20,564,901.68, 28,378,471.92 and 11,862,556.56 is: 16,369,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564,901.68 : 28,378,471.92 = 11,862,556.56 : x
  2. Step 2: Convert to fraction form
    20,564,901.68/28,378,471.92 = 11,862,556.56/x
  3. Step 3: Cross multiply
    20,564,901.68x = 28,378,471.92 × 11,862,556.56
  4. Step 4: Simplify right side
    20,564,901.68x = 336,641,228,237,371.81
  5. Step 5: Solve for x
    x = 336,641,228,237,371.81/20,564,901.68
  6. Step 6: Final answer
    x = 16,369,697.92

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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.