Home / 30,165.48-45,479.64-28,132.68

Finding the Fourth Proportional to 30,165.48, 45,479.64 and 28,132.68

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Solution

The fourth proportional to 30,165.48, 45,479.64 and 28,132.68 is: 42,414.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.48 : 45,479.64 = 28,132.68 : x
  2. Step 2: Convert to fraction form
    30,165.48/45,479.64 = 28,132.68/x
  3. Step 3: Cross multiply
    30,165.48x = 45,479.64 × 28,132.68
  4. Step 4: Simplify right side
    30,165.48x = 1,279,464,158.64
  5. Step 5: Solve for x
    x = 1,279,464,158.64/30,165.48
  6. Step 6: Final answer
    x = 42,414.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.