Home / 20,175.36-30,266.28-8,491.92

Finding the Fourth Proportional to 20,175.36, 30,266.28 and 8,491.92

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Solution

The fourth proportional to 20,175.36, 30,266.28 and 8,491.92 is: 12,739.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.36 : 30,266.28 = 8,491.92 : x
  2. Step 2: Convert to fraction form
    20,175.36/30,266.28 = 8,491.92/x
  3. Step 3: Cross multiply
    20,175.36x = 30,266.28 × 8,491.92
  4. Step 4: Simplify right side
    20,175.36x = 257,018,828.46
  5. Step 5: Solve for x
    x = 257,018,828.46/20,175.36
  6. Step 6: Final answer
    x = 12,739.24

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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.