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Finding the Fourth Proportional to 10,348.44, 14,264.20 and 6,990.20

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Solution

The fourth proportional to 10,348.44, 14,264.20 and 6,990.20 is: 9,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,348.44 : 14,264.20 = 6,990.20 : x
  2. Step 2: Convert to fraction form
    10,348.44/14,264.20 = 6,990.20/x
  3. Step 3: Cross multiply
    10,348.44x = 14,264.20 × 6,990.20
  4. Step 4: Simplify right side
    10,348.44x = 99,709,610.84
  5. Step 5: Solve for x
    x = 99,709,610.84/10,348.44
  6. Step 6: Final answer
    x = 9,635.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.