Home / 20,403.66-30,605.13-5,612.52

Finding the Fourth Proportional to 20,403.66, 30,605.13 and 5,612.52

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Solution

The fourth proportional to 20,403.66, 30,605.13 and 5,612.52 is: 8,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.66 : 30,605.13 = 5,612.52 : x
  2. Step 2: Convert to fraction form
    20,403.66/30,605.13 = 5,612.52/x
  3. Step 3: Cross multiply
    20,403.66x = 30,605.13 × 5,612.52
  4. Step 4: Simplify right side
    20,403.66x = 171,771,904.23
  5. Step 5: Solve for x
    x = 171,771,904.23/20,403.66
  6. Step 6: Final answer
    x = 8,418.68

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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.