Home / 28,639.37-39,522.56-15,892.61

Finding the Fourth Proportional to 28,639.37, 39,522.56 and 15,892.61

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Solution

The fourth proportional to 28,639.37, 39,522.56 and 15,892.61 is: 21,931.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.37 : 39,522.56 = 15,892.61 : x
  2. Step 2: Convert to fraction form
    28,639.37/39,522.56 = 15,892.61/x
  3. Step 3: Cross multiply
    28,639.37x = 39,522.56 × 15,892.61
  4. Step 4: Simplify right side
    28,639.37x = 628,116,355.21
  5. Step 5: Solve for x
    x = 628,116,355.21/28,639.37
  6. Step 6: Final answer
    x = 21,931.92

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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.