Home / 21,931.56-32,868.72-19,151.64

Finding the Fourth Proportional to 21,931.56, 32,868.72 and 19,151.64

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Solution

The fourth proportional to 21,931.56, 32,868.72 and 19,151.64 is: 28,702.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.56 : 32,868.72 = 19,151.64 : x
  2. Step 2: Convert to fraction form
    21,931.56/32,868.72 = 19,151.64/x
  3. Step 3: Cross multiply
    21,931.56x = 32,868.72 × 19,151.64
  4. Step 4: Simplify right side
    21,931.56x = 629,489,892.70
  5. Step 5: Solve for x
    x = 629,489,892.70/21,931.56
  6. Step 6: Final answer
    x = 28,702.47

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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.