Home / 19,612.48-29,410.20-7,128.36

Finding the Fourth Proportional to 19,612.48, 29,410.20 and 7,128.36

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Solution

The fourth proportional to 19,612.48, 29,410.20 and 7,128.36 is: 10,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,612.48 : 29,410.20 = 7,128.36 : x
  2. Step 2: Convert to fraction form
    19,612.48/29,410.20 = 7,128.36/x
  3. Step 3: Cross multiply
    19,612.48x = 29,410.20 × 7,128.36
  4. Step 4: Simplify right side
    19,612.48x = 209,646,493.27
  5. Step 5: Solve for x
    x = 209,646,493.27/19,612.48
  6. Step 6: Final answer
    x = 10,689.44

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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.