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Finding the Fourth Proportional to 11,990.53, 16,549.04 and 7,518.11

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Solution

The fourth proportional to 11,990.53, 16,549.04 and 7,518.11 is: 10,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.53 : 16,549.04 = 7,518.11 : x
  2. Step 2: Convert to fraction form
    11,990.53/16,549.04 = 7,518.11/x
  3. Step 3: Cross multiply
    11,990.53x = 16,549.04 × 7,518.11
  4. Step 4: Simplify right side
    11,990.53x = 124,417,563.28
  5. Step 5: Solve for x
    x = 124,417,563.28/11,990.53
  6. Step 6: Final answer
    x = 10,376.32

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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.