Home / 21,561.90-32,331.34-19,069.12

Finding the Fourth Proportional to 21,561.90, 32,331.34 and 19,069.12

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Solution

The fourth proportional to 21,561.90, 32,331.34 and 19,069.12 is: 28,593.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.90 : 32,331.34 = 19,069.12 : x
  2. Step 2: Convert to fraction form
    21,561.90/32,331.34 = 19,069.12/x
  3. Step 3: Cross multiply
    21,561.90x = 32,331.34 × 19,069.12
  4. Step 4: Simplify right side
    21,561.90x = 616,530,202.22
  5. Step 5: Solve for x
    x = 616,530,202.22/21,561.90
  6. Step 6: Final answer
    x = 28,593.50

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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.