Home / 17,612.80-26,412.52-5,128.68

Finding the Fourth Proportional to 17,612.80, 26,412.52 and 5,128.68

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Solution

The fourth proportional to 17,612.80, 26,412.52 and 5,128.68 is: 7,691.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,612.80 : 26,412.52 = 5,128.68 : x
  2. Step 2: Convert to fraction form
    17,612.80/26,412.52 = 5,128.68/x
  3. Step 3: Cross multiply
    17,612.80x = 26,412.52 × 5,128.68
  4. Step 4: Simplify right side
    17,612.80x = 135,461,363.07
  5. Step 5: Solve for x
    x = 135,461,363.07/17,612.80
  6. Step 6: Final answer
    x = 7,691.07

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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.