Home / 15,504.49-21,396.40-8,789.97

Finding the Fourth Proportional to 15,504.49, 21,396.40 and 8,789.97

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Solution

The fourth proportional to 15,504.49, 21,396.40 and 8,789.97 is: 12,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.49 : 21,396.40 = 8,789.97 : x
  2. Step 2: Convert to fraction form
    15,504.49/21,396.40 = 8,789.97/x
  3. Step 3: Cross multiply
    15,504.49x = 21,396.40 × 8,789.97
  4. Step 4: Simplify right side
    15,504.49x = 188,073,701.46
  5. Step 5: Solve for x
    x = 188,073,701.46/15,504.49
  6. Step 6: Final answer
    x = 12,130.27

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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.