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Finding the Fourth Proportional to 21,992.59, 32,988.88 and 19,022.20

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Solution

The fourth proportional to 21,992.59, 32,988.88 and 19,022.20 is: 28,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.59 : 32,988.88 = 19,022.20 : x
  2. Step 2: Convert to fraction form
    21,992.59/32,988.88 = 19,022.20/x
  3. Step 3: Cross multiply
    21,992.59x = 32,988.88 × 19,022.20
  4. Step 4: Simplify right side
    21,992.59x = 627,521,083.18
  5. Step 5: Solve for x
    x = 627,521,083.18/21,992.59
  6. Step 6: Final answer
    x = 28,533.30

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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.