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Finding the Fourth Proportional to 10,664.03, 15,990.68 and 6,223.21

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Solution

The fourth proportional to 10,664.03, 15,990.68 and 6,223.21 is: 9,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,664.03 : 15,990.68 = 6,223.21 : x
  2. Step 2: Convert to fraction form
    10,664.03/15,990.68 = 6,223.21/x
  3. Step 3: Cross multiply
    10,664.03x = 15,990.68 × 6,223.21
  4. Step 4: Simplify right side
    10,664.03x = 99,513,359.68
  5. Step 5: Solve for x
    x = 99,513,359.68/10,664.03
  6. Step 6: Final answer
    x = 9,331.68

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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.