Home / 10,581.72-15,869.40-6,638.96

Finding the Fourth Proportional to 10,581.72, 15,869.40 and 6,638.96

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Solution

The fourth proportional to 10,581.72, 15,869.40 and 6,638.96 is: 9,956.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.72 : 15,869.40 = 6,638.96 : x
  2. Step 2: Convert to fraction form
    10,581.72/15,869.40 = 6,638.96/x
  3. Step 3: Cross multiply
    10,581.72x = 15,869.40 × 6,638.96
  4. Step 4: Simplify right side
    10,581.72x = 105,356,311.82
  5. Step 5: Solve for x
    x = 105,356,311.82/10,581.72
  6. Step 6: Final answer
    x = 9,956.44

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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.