Home / 20,545,612.94-28,339,293.62-13,212,716.76

Finding the Fourth Proportional to 20,545,612.94, 28,339,293.62 and 13,212,716.76

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Solution

The fourth proportional to 20,545,612.94, 28,339,293.62 and 13,212,716.76 is: 18,224,769.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545,612.94 : 28,339,293.62 = 13,212,716.76 : x
  2. Step 2: Convert to fraction form
    20,545,612.94/28,339,293.62 = 13,212,716.76/x
  3. Step 3: Cross multiply
    20,545,612.94x = 28,339,293.62 × 13,212,716.76
  4. Step 4: Simplify right side
    20,545,612.94x = 374,439,059,812,566.81
  5. Step 5: Solve for x
    x = 374,439,059,812,566.81/20,545,612.94
  6. Step 6: Final answer
    x = 18,224,769.49

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Double scale
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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.