Home / 20,387,838,412.49-28,136,631,073.20-12,359,517,329.39

Finding the Fourth Proportional to 20,387,838,412.49, 28,136,631,073.20 and 12,359,517,329.39

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Solution

The fourth proportional to 20,387,838,412.49, 28,136,631,073.20 and 12,359,517,329.39 is: 17,056,991,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,838,412.49 : 28,136,631,073.20 = 12,359,517,329.39 : x
  2. Step 2: Convert to fraction form
    20,387,838,412.49/28,136,631,073.20 = 12,359,517,329.39/x
  3. Step 3: Cross multiply
    20,387,838,412.49x = 28,136,631,073.20 × 12,359,517,329.39
  4. Step 4: Simplify right side
    20,387,838,412.49x = 347,755,179,339,868,536,832
  5. Step 5: Solve for x
    x = 347,755,179,339,868,536,832/20,387,838,412.49
  6. Step 6: Final answer
    x = 17,056,991,148.55

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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.