Home / 20,981,303.93-28,955,093.01-11,688,868.74

Finding the Fourth Proportional to 20,981,303.93, 28,955,093.01 and 11,688,868.74

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Solution

The fourth proportional to 20,981,303.93, 28,955,093.01 and 11,688,868.74 is: 16,131,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981,303.93 : 28,955,093.01 = 11,688,868.74 : x
  2. Step 2: Convert to fraction form
    20,981,303.93/28,955,093.01 = 11,688,868.74/x
  3. Step 3: Cross multiply
    20,981,303.93x = 28,955,093.01 × 11,688,868.74
  4. Step 4: Simplify right side
    20,981,303.93x = 338,452,281,548,381.56
  5. Step 5: Solve for x
    x = 338,452,281,548,381.56/20,981,303.93
  6. Step 6: Final answer
    x = 16,131,136.68

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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.