Home / 15,564.81-21,479.33-8,850.43

Finding the Fourth Proportional to 15,564.81, 21,479.33 and 8,850.43

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Solution

The fourth proportional to 15,564.81, 21,479.33 and 8,850.43 is: 12,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.81 : 21,479.33 = 8,850.43 : x
  2. Step 2: Convert to fraction form
    15,564.81/21,479.33 = 8,850.43/x
  3. Step 3: Cross multiply
    15,564.81x = 21,479.33 × 8,850.43
  4. Step 4: Simplify right side
    15,564.81x = 190,101,284.49
  5. Step 5: Solve for x
    x = 190,101,284.49/15,564.81
  6. Step 6: Final answer
    x = 12,213.53

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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.