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Finding the Fourth Proportional to 21,967.45, 32,944.76 and 12,605.87

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Solution

The fourth proportional to 21,967.45, 32,944.76 and 12,605.87 is: 18,905.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.45 : 32,944.76 = 12,605.87 : x
  2. Step 2: Convert to fraction form
    21,967.45/32,944.76 = 12,605.87/x
  3. Step 3: Cross multiply
    21,967.45x = 32,944.76 × 12,605.87
  4. Step 4: Simplify right side
    21,967.45x = 415,297,298.71
  5. Step 5: Solve for x
    x = 415,297,298.71/21,967.45
  6. Step 6: Final answer
    x = 18,905.13

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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.