Home / 15,618.69-21,554.37-8,903.25

Finding the Fourth Proportional to 15,618.69, 21,554.37 and 8,903.25

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Solution

The fourth proportional to 15,618.69, 21,554.37 and 8,903.25 is: 12,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.69 : 21,554.37 = 8,903.25 : x
  2. Step 2: Convert to fraction form
    15,618.69/21,554.37 = 8,903.25/x
  3. Step 3: Cross multiply
    15,618.69x = 21,554.37 × 8,903.25
  4. Step 4: Simplify right side
    15,618.69x = 191,903,944.70
  5. Step 5: Solve for x
    x = 191,903,944.70/15,618.69
  6. Step 6: Final answer
    x = 12,286.81

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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.