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Finding the Fourth Proportional to 19,216.20, 28,824.30 and 15,328.20

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Solution

The fourth proportional to 19,216.20, 28,824.30 and 15,328.20 is: 22,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.20 : 28,824.30 = 15,328.20 : x
  2. Step 2: Convert to fraction form
    19,216.20/28,824.30 = 15,328.20/x
  3. Step 3: Cross multiply
    19,216.20x = 28,824.30 × 15,328.20
  4. Step 4: Simplify right side
    19,216.20x = 441,824,635.26
  5. Step 5: Solve for x
    x = 441,824,635.26/19,216.20
  6. Step 6: Final answer
    x = 22,992.30

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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.