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Finding the Fourth Proportional to 21,483.57, 32,221.19 and 10,807.09

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Solution

The fourth proportional to 21,483.57, 32,221.19 and 10,807.09 is: 16,208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,483.57 : 32,221.19 = 10,807.09 : x
  2. Step 2: Convert to fraction form
    21,483.57/32,221.19 = 10,807.09/x
  3. Step 3: Cross multiply
    21,483.57x = 32,221.19 × 10,807.09
  4. Step 4: Simplify right side
    21,483.57x = 348,217,246.70
  5. Step 5: Solve for x
    x = 348,217,246.70/21,483.57
  6. Step 6: Final answer
    x = 16,208.53

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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.