Home / 30,555.39-45,727.38-21,132.15

Finding the Fourth Proportional to 30,555.39, 45,727.38 and 21,132.15

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Solution

The fourth proportional to 30,555.39, 45,727.38 and 21,132.15 is: 31,625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.39 : 45,727.38 = 21,132.15 : x
  2. Step 2: Convert to fraction form
    30,555.39/45,727.38 = 21,132.15/x
  3. Step 3: Cross multiply
    30,555.39x = 45,727.38 × 21,132.15
  4. Step 4: Simplify right side
    30,555.39x = 966,317,853.27
  5. Step 5: Solve for x
    x = 966,317,853.27/30,555.39
  6. Step 6: Final answer
    x = 31,625.12

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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.