Home / 17,815.28-26,722.64-6,128.20

Finding the Fourth Proportional to 17,815.28, 26,722.64 and 6,128.20

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Solution

The fourth proportional to 17,815.28, 26,722.64 and 6,128.20 is: 9,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,815.28 : 26,722.64 = 6,128.20 : x
  2. Step 2: Convert to fraction form
    17,815.28/26,722.64 = 6,128.20/x
  3. Step 3: Cross multiply
    17,815.28x = 26,722.64 × 6,128.20
  4. Step 4: Simplify right side
    17,815.28x = 163,761,682.45
  5. Step 5: Solve for x
    x = 163,761,682.45/17,815.28
  6. Step 6: Final answer
    x = 9,192.20

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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.