Home / 17,921.55-26,876.85-4,772.21

Finding the Fourth Proportional to 17,921.55, 26,876.85 and 4,772.21

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Solution

The fourth proportional to 17,921.55, 26,876.85 and 4,772.21 is: 7,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.55 : 26,876.85 = 4,772.21 : x
  2. Step 2: Convert to fraction form
    17,921.55/26,876.85 = 4,772.21/x
  3. Step 3: Cross multiply
    17,921.55x = 26,876.85 × 4,772.21
  4. Step 4: Simplify right side
    17,921.55x = 128,261,972.34
  5. Step 5: Solve for x
    x = 128,261,972.34/17,921.55
  6. Step 6: Final answer
    x = 7,156.86

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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.