Home / 28,310.94-39,069.57-15,564.66

Finding the Fourth Proportional to 28,310.94, 39,069.57 and 15,564.66

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Solution

The fourth proportional to 28,310.94, 39,069.57 and 15,564.66 is: 21,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.94 : 39,069.57 = 15,564.66 : x
  2. Step 2: Convert to fraction form
    28,310.94/39,069.57 = 15,564.66/x
  3. Step 3: Cross multiply
    28,310.94x = 39,069.57 × 15,564.66
  4. Step 4: Simplify right side
    28,310.94x = 608,104,353.93
  5. Step 5: Solve for x
    x = 608,104,353.93/28,310.94
  6. Step 6: Final answer
    x = 21,479.48

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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.