Home / 10,520.53-15,780.83-2,729.35

Finding the Fourth Proportional to 10,520.53, 15,780.83 and 2,729.35

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Solution

The fourth proportional to 10,520.53, 15,780.83 and 2,729.35 is: 4,094.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.53 : 15,780.83 = 2,729.35 : x
  2. Step 2: Convert to fraction form
    10,520.53/15,780.83 = 2,729.35/x
  3. Step 3: Cross multiply
    10,520.53x = 15,780.83 × 2,729.35
  4. Step 4: Simplify right side
    10,520.53x = 43,071,325.67
  5. Step 5: Solve for x
    x = 43,071,325.67/10,520.53
  6. Step 6: Final answer
    x = 4,094.03

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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.