Home / 11,018.40-16,503.30-9,787.20

Finding the Fourth Proportional to 11,018.40, 16,503.30 and 9,787.20

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Solution

The fourth proportional to 11,018.40, 16,503.30 and 9,787.20 is: 14,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,018.40 : 16,503.30 = 9,787.20 : x
  2. Step 2: Convert to fraction form
    11,018.40/16,503.30 = 9,787.20/x
  3. Step 3: Cross multiply
    11,018.40x = 16,503.30 × 9,787.20
  4. Step 4: Simplify right side
    11,018.40x = 161,521,097.76
  5. Step 5: Solve for x
    x = 161,521,097.76/11,018.40
  6. Step 6: Final answer
    x = 14,659.22

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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.