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Finding the Fourth Proportional to 21,503.80, 32,230.94 and 8,345.04

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Solution

The fourth proportional to 21,503.80, 32,230.94 and 8,345.04 is: 12,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,503.80 : 32,230.94 = 8,345.04 : x
  2. Step 2: Convert to fraction form
    21,503.80/32,230.94 = 8,345.04/x
  3. Step 3: Cross multiply
    21,503.80x = 32,230.94 × 8,345.04
  4. Step 4: Simplify right side
    21,503.80x = 268,968,483.54
  5. Step 5: Solve for x
    x = 268,968,483.54/21,503.80
  6. Step 6: Final answer
    x = 12,507.95

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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.