Home / 14,465.12-20,078.92-14,115.20

Finding the Fourth Proportional to 14,465.12, 20,078.92 and 14,115.20

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Solution

The fourth proportional to 14,465.12, 20,078.92 and 14,115.20 is: 19,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,465.12 : 20,078.92 = 14,115.20 : x
  2. Step 2: Convert to fraction form
    14,465.12/20,078.92 = 14,115.20/x
  3. Step 3: Cross multiply
    14,465.12x = 20,078.92 × 14,115.20
  4. Step 4: Simplify right side
    14,465.12x = 283,417,971.58
  5. Step 5: Solve for x
    x = 283,417,971.58/14,465.12
  6. Step 6: Final answer
    x = 19,593.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.