Home / 18,338.49-25,209.80-15,776.89

Finding the Fourth Proportional to 18,338.49, 25,209.80 and 15,776.89

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Solution

The fourth proportional to 18,338.49, 25,209.80 and 15,776.89 is: 21,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.49 : 25,209.80 = 15,776.89 : x
  2. Step 2: Convert to fraction form
    18,338.49/25,209.80 = 15,776.89/x
  3. Step 3: Cross multiply
    18,338.49x = 25,209.80 × 15,776.89
  4. Step 4: Simplify right side
    18,338.49x = 397,732,241.52
  5. Step 5: Solve for x
    x = 397,732,241.52/18,338.49
  6. Step 6: Final answer
    x = 21,688.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.