Home / 28,315.65-39,072.20-15,566.73

Finding the Fourth Proportional to 28,315.65, 39,072.20 and 15,566.73

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Solution

The fourth proportional to 28,315.65, 39,072.20 and 15,566.73 is: 21,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.65 : 39,072.20 = 15,566.73 : x
  2. Step 2: Convert to fraction form
    28,315.65/39,072.20 = 15,566.73/x
  3. Step 3: Cross multiply
    28,315.65x = 39,072.20 × 15,566.73
  4. Step 4: Simplify right side
    28,315.65x = 608,226,310.07
  5. Step 5: Solve for x
    x = 608,226,310.07/28,315.65
  6. Step 6: Final answer
    x = 21,480.22

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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.