Home / 19,909.53-27,475.40-10,956.90

Finding the Fourth Proportional to 19,909.53, 27,475.40 and 10,956.90

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Solution

The fourth proportional to 19,909.53, 27,475.40 and 10,956.90 is: 15,120.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.53 : 27,475.40 = 10,956.90 : x
  2. Step 2: Convert to fraction form
    19,909.53/27,475.40 = 10,956.90/x
  3. Step 3: Cross multiply
    19,909.53x = 27,475.40 × 10,956.90
  4. Step 4: Simplify right side
    19,909.53x = 301,045,340.69
  5. Step 5: Solve for x
    x = 301,045,340.69/19,909.53
  6. Step 6: Final answer
    x = 15,120.67

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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.