Home / 28,685.33-39,583.41-15,938.90

Finding the Fourth Proportional to 28,685.33, 39,583.41 and 15,938.90

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Solution

The fourth proportional to 28,685.33, 39,583.41 and 15,938.90 is: 21,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.33 : 39,583.41 = 15,938.90 : x
  2. Step 2: Convert to fraction form
    28,685.33/39,583.41 = 15,938.90/x
  3. Step 3: Cross multiply
    28,685.33x = 39,583.41 × 15,938.90
  4. Step 4: Simplify right side
    28,685.33x = 630,916,013.65
  5. Step 5: Solve for x
    x = 630,916,013.65/28,685.33
  6. Step 6: Final answer
    x = 21,994.38

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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.