Home / 19,418.28-29,103.12-8,312.04

Finding the Fourth Proportional to 19,418.28, 29,103.12 and 8,312.04

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Solution

The fourth proportional to 19,418.28, 29,103.12 and 8,312.04 is: 12,457.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.28 : 29,103.12 = 8,312.04 : x
  2. Step 2: Convert to fraction form
    19,418.28/29,103.12 = 8,312.04/x
  3. Step 3: Cross multiply
    19,418.28x = 29,103.12 × 8,312.04
  4. Step 4: Simplify right side
    19,418.28x = 241,906,297.56
  5. Step 5: Solve for x
    x = 241,906,297.56/19,418.28
  6. Step 6: Final answer
    x = 12,457.66

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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.