Home / 21,560.70-32,286.88-13,639.32

Finding the Fourth Proportional to 21,560.70, 32,286.88 and 13,639.32

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Solution

The fourth proportional to 21,560.70, 32,286.88 and 13,639.32 is: 20,424.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.70 : 32,286.88 = 13,639.32 : x
  2. Step 2: Convert to fraction form
    21,560.70/32,286.88 = 13,639.32/x
  3. Step 3: Cross multiply
    21,560.70x = 32,286.88 × 13,639.32
  4. Step 4: Simplify right side
    21,560.70x = 440,371,088.12
  5. Step 5: Solve for x
    x = 440,371,088.12/21,560.70
  6. Step 6: Final answer
    x = 20,424.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.