Home / 28,729.10-39,645.39-15,981.62

Finding the Fourth Proportional to 28,729.10, 39,645.39 and 15,981.62

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Solution

The fourth proportional to 28,729.10, 39,645.39 and 15,981.62 is: 22,054.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.10 : 39,645.39 = 15,981.62 : x
  2. Step 2: Convert to fraction form
    28,729.10/39,645.39 = 15,981.62/x
  3. Step 3: Cross multiply
    28,729.10x = 39,645.39 × 15,981.62
  4. Step 4: Simplify right side
    28,729.10x = 633,597,359.50
  5. Step 5: Solve for x
    x = 633,597,359.50/28,729.10
  6. Step 6: Final answer
    x = 22,054.21

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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.