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Finding the Fourth Proportional to 11,990.44, 16,557 and 7,521.68

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Solution

The fourth proportional to 11,990.44, 16,557 and 7,521.68 is: 10,386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.44 : 16,557 = 7,521.68 : x
  2. Step 2: Convert to fraction form
    11,990.44/16,557 = 7,521.68/x
  3. Step 3: Cross multiply
    11,990.44x = 16,557 × 7,521.68
  4. Step 4: Simplify right side
    11,990.44x = 124,536,455.76
  5. Step 5: Solve for x
    x = 124,536,455.76/11,990.44
  6. Step 6: Final answer
    x = 10,386.31

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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.