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Finding the Fourth Proportional to 21,630.66, 32,492.08 and 20,366.64

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Solution

The fourth proportional to 21,630.66, 32,492.08 and 20,366.64 is: 30,593.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.66 : 32,492.08 = 20,366.64 : x
  2. Step 2: Convert to fraction form
    21,630.66/32,492.08 = 20,366.64/x
  3. Step 3: Cross multiply
    21,630.66x = 32,492.08 × 20,366.64
  4. Step 4: Simplify right side
    21,630.66x = 661,754,496.21
  5. Step 5: Solve for x
    x = 661,754,496.21/21,630.66
  6. Step 6: Final answer
    x = 30,593.36

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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.