Home / 21,157.14-31,673.39-15,635.14

Finding the Fourth Proportional to 21,157.14, 31,673.39 and 15,635.14

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Solution

The fourth proportional to 21,157.14, 31,673.39 and 15,635.14 is: 23,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.14 : 31,673.39 = 15,635.14 : x
  2. Step 2: Convert to fraction form
    21,157.14/31,673.39 = 15,635.14/x
  3. Step 3: Cross multiply
    21,157.14x = 31,673.39 × 15,635.14
  4. Step 4: Simplify right side
    21,157.14x = 495,217,886.92
  5. Step 5: Solve for x
    x = 495,217,886.92/21,157.14
  6. Step 6: Final answer
    x = 23,406.66

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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.