Home / 13,145.60-19,714.80-5,355.20

Finding the Fourth Proportional to 13,145.60, 19,714.80 and 5,355.20

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Solution

The fourth proportional to 13,145.60, 19,714.80 and 5,355.20 is: 8,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.60 : 19,714.80 = 5,355.20 : x
  2. Step 2: Convert to fraction form
    13,145.60/19,714.80 = 5,355.20/x
  3. Step 3: Cross multiply
    13,145.60x = 19,714.80 × 5,355.20
  4. Step 4: Simplify right side
    13,145.60x = 105,576,696.96
  5. Step 5: Solve for x
    x = 105,576,696.96/13,145.60
  6. Step 6: Final answer
    x = 8,031.33

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1.5x scale

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.