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Finding the Fourth Proportional to 13,123,669.20, 19,685,503.80 and 13,123,669.20

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Solution

The fourth proportional to 13,123,669.20, 19,685,503.80 and 13,123,669.20 is: 19,685,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123,669.20 : 19,685,503.80 = 13,123,669.20 : x
  2. Step 2: Convert to fraction form
    13,123,669.20/19,685,503.80 = 13,123,669.20/x
  3. Step 3: Cross multiply
    13,123,669.20x = 19,685,503.80 × 13,123,669.20
  4. Step 4: Simplify right side
    13,123,669.20x = 258,346,039,906,542.97
  5. Step 5: Solve for x
    x = 258,346,039,906,542.97/13,123,669.20
  6. Step 6: Final answer
    x = 19,685,503.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.