Home / 15,815.16-23,714.68-5,281.39

Finding the Fourth Proportional to 15,815.16, 23,714.68 and 5,281.39

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Solution

The fourth proportional to 15,815.16, 23,714.68 and 5,281.39 is: 7,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.16 : 23,714.68 = 5,281.39 : x
  2. Step 2: Convert to fraction form
    15,815.16/23,714.68 = 5,281.39/x
  3. Step 3: Cross multiply
    15,815.16x = 23,714.68 × 5,281.39
  4. Step 4: Simplify right side
    15,815.16x = 125,246,473.81
  5. Step 5: Solve for x
    x = 125,246,473.81/15,815.16
  6. Step 6: Final answer
    x = 7,919.39

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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.