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Finding the Fourth Proportional to 21,816.58, 32,721.72 and 7,023.58

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Solution

The fourth proportional to 21,816.58, 32,721.72 and 7,023.58 is: 10,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.58 : 32,721.72 = 7,023.58 : x
  2. Step 2: Convert to fraction form
    21,816.58/32,721.72 = 7,023.58/x
  3. Step 3: Cross multiply
    21,816.58x = 32,721.72 × 7,023.58
  4. Step 4: Simplify right side
    21,816.58x = 229,823,618.16
  5. Step 5: Solve for x
    x = 229,823,618.16/21,816.58
  6. Step 6: Final answer
    x = 10,534.36

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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.