Home / 15,503.94-21,392.10-8,789.04

Finding the Fourth Proportional to 15,503.94, 21,392.10 and 8,789.04

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Solution

The fourth proportional to 15,503.94, 21,392.10 and 8,789.04 is: 12,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.94 : 21,392.10 = 8,789.04 : x
  2. Step 2: Convert to fraction form
    15,503.94/21,392.10 = 8,789.04/x
  3. Step 3: Cross multiply
    15,503.94x = 21,392.10 × 8,789.04
  4. Step 4: Simplify right side
    15,503.94x = 188,016,022.58
  5. Step 5: Solve for x
    x = 188,016,022.58/15,503.94
  6. Step 6: Final answer
    x = 12,126.98

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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.