Home / 20,377,156.49-28,133,384.05-12,650,398.01

Finding the Fourth Proportional to 20,377,156.49, 28,133,384.05 and 12,650,398.01

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Solution

The fourth proportional to 20,377,156.49, 28,133,384.05 and 12,650,398.01 is: 17,465,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377,156.49 : 28,133,384.05 = 12,650,398.01 : x
  2. Step 2: Convert to fraction form
    20,377,156.49/28,133,384.05 = 12,650,398.01/x
  3. Step 3: Cross multiply
    20,377,156.49x = 28,133,384.05 × 12,650,398.01
  4. Step 4: Simplify right side
    20,377,156.49x = 355,898,505,702,645.12
  5. Step 5: Solve for x
    x = 355,898,505,702,645.12/20,377,156.49
  6. Step 6: Final answer
    x = 17,465,562.77

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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.