Home / 15,815.21-23,722.81-4,128.32

Finding the Fourth Proportional to 15,815.21, 23,722.81 and 4,128.32

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Solution

The fourth proportional to 15,815.21, 23,722.81 and 4,128.32 is: 6,192.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.21 : 23,722.81 = 4,128.32 : x
  2. Step 2: Convert to fraction form
    15,815.21/23,722.81 = 4,128.32/x
  3. Step 3: Cross multiply
    15,815.21x = 23,722.81 × 4,128.32
  4. Step 4: Simplify right side
    15,815.21x = 97,935,399.97
  5. Step 5: Solve for x
    x = 97,935,399.97/15,815.21
  6. Step 6: Final answer
    x = 6,192.48

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Similar ratio
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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.