Home / 28,639.81-39,523.14-15,893.04

Finding the Fourth Proportional to 28,639.81, 39,523.14 and 15,893.04

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Solution

The fourth proportional to 28,639.81, 39,523.14 and 15,893.04 is: 21,932.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.81 : 39,523.14 = 15,893.04 : x
  2. Step 2: Convert to fraction form
    28,639.81/39,523.14 = 15,893.04/x
  3. Step 3: Cross multiply
    28,639.81x = 39,523.14 × 15,893.04
  4. Step 4: Simplify right side
    28,639.81x = 628,142,844.95
  5. Step 5: Solve for x
    x = 628,142,844.95/28,639.81
  6. Step 6: Final answer
    x = 21,932.51

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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.