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Finding the Fourth Proportional to 21,622.99, 32,219.54 and 19,264.88

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Solution

The fourth proportional to 21,622.99, 32,219.54 and 19,264.88 is: 28,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.99 : 32,219.54 = 19,264.88 : x
  2. Step 2: Convert to fraction form
    21,622.99/32,219.54 = 19,264.88/x
  3. Step 3: Cross multiply
    21,622.99x = 32,219.54 × 19,264.88
  4. Step 4: Simplify right side
    21,622.99x = 620,705,314.33
  5. Step 5: Solve for x
    x = 620,705,314.33/21,622.99
  6. Step 6: Final answer
    x = 28,705.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.