Home / 15,869.94-21,900.51-8,796.30

Finding the Fourth Proportional to 15,869.94, 21,900.51 and 8,796.30

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Solution

The fourth proportional to 15,869.94, 21,900.51 and 8,796.30 is: 12,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.94 : 21,900.51 = 8,796.30 : x
  2. Step 2: Convert to fraction form
    15,869.94/21,900.51 = 8,796.30/x
  3. Step 3: Cross multiply
    15,869.94x = 21,900.51 × 8,796.30
  4. Step 4: Simplify right side
    15,869.94x = 192,643,456.11
  5. Step 5: Solve for x
    x = 192,643,456.11/15,869.94
  6. Step 6: Final answer
    x = 12,138.89

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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.