Home / 15,836.44-21,855.36-9,123.84

Finding the Fourth Proportional to 15,836.44, 21,855.36 and 9,123.84

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Solution

The fourth proportional to 15,836.44, 21,855.36 and 9,123.84 is: 12,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,836.44 : 21,855.36 = 9,123.84 : x
  2. Step 2: Convert to fraction form
    15,836.44/21,855.36 = 9,123.84/x
  3. Step 3: Cross multiply
    15,836.44x = 21,855.36 × 9,123.84
  4. Step 4: Simplify right side
    15,836.44x = 199,404,807.78
  5. Step 5: Solve for x
    x = 199,404,807.78/15,836.44
  6. Step 6: Final answer
    x = 12,591.52

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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.