Home / 28,639.32-39,521.52-15,892.44

Finding the Fourth Proportional to 28,639.32, 39,521.52 and 15,892.44

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Solution

The fourth proportional to 28,639.32, 39,521.52 and 15,892.44 is: 21,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.32 : 39,521.52 = 15,892.44 : x
  2. Step 2: Convert to fraction form
    28,639.32/39,521.52 = 15,892.44/x
  3. Step 3: Cross multiply
    28,639.32x = 39,521.52 × 15,892.44
  4. Step 4: Simplify right side
    28,639.32x = 628,093,385.31
  5. Step 5: Solve for x
    x = 628,093,385.31/28,639.32
  6. Step 6: Final answer
    x = 21,931.16

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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.