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Finding the Fourth Proportional to 21,207.92, 31,801.08 and 8,050.28

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Solution

The fourth proportional to 21,207.92, 31,801.08 and 8,050.28 is: 12,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.92 : 31,801.08 = 8,050.28 : x
  2. Step 2: Convert to fraction form
    21,207.92/31,801.08 = 8,050.28/x
  3. Step 3: Cross multiply
    21,207.92x = 31,801.08 × 8,050.28
  4. Step 4: Simplify right side
    21,207.92x = 256,007,598.30
  5. Step 5: Solve for x
    x = 256,007,598.30/21,207.92
  6. Step 6: Final answer
    x = 12,071.32

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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.