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Finding the Fourth Proportional to 21,487.40, 32,226.90 and 10,810.90

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Solution

The fourth proportional to 21,487.40, 32,226.90 and 10,810.90 is: 16,214.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.40 : 32,226.90 = 10,810.90 : x
  2. Step 2: Convert to fraction form
    21,487.40/32,226.90 = 10,810.90/x
  3. Step 3: Cross multiply
    21,487.40x = 32,226.90 × 10,810.90
  4. Step 4: Simplify right side
    21,487.40x = 348,401,793.21
  5. Step 5: Solve for x
    x = 348,401,793.21/21,487.40
  6. Step 6: Final answer
    x = 16,214.24

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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.