Home / 21,945.28-32,840.16-19,353.28

Finding the Fourth Proportional to 21,945.28, 32,840.16 and 19,353.28

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Solution

The fourth proportional to 21,945.28, 32,840.16 and 19,353.28 is: 28,961.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945.28 : 32,840.16 = 19,353.28 : x
  2. Step 2: Convert to fraction form
    21,945.28/32,840.16 = 19,353.28/x
  3. Step 3: Cross multiply
    21,945.28x = 32,840.16 × 19,353.28
  4. Step 4: Simplify right side
    21,945.28x = 635,564,811.72
  5. Step 5: Solve for x
    x = 635,564,811.72/21,945.28
  6. Step 6: Final answer
    x = 28,961.34

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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.