Home / 13,145.40-19,714.68-5,247.60

Finding the Fourth Proportional to 13,145.40, 19,714.68 and 5,247.60

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Solution

The fourth proportional to 13,145.40, 19,714.68 and 5,247.60 is: 7,870.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.40 : 19,714.68 = 5,247.60 : x
  2. Step 2: Convert to fraction form
    13,145.40/19,714.68 = 5,247.60/x
  3. Step 3: Cross multiply
    13,145.40x = 19,714.68 × 5,247.60
  4. Step 4: Simplify right side
    13,145.40x = 103,454,754.77
  5. Step 5: Solve for x
    x = 103,454,754.77/13,145.40
  6. Step 6: Final answer
    x = 7,870.03

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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.