Home / 20,925.99-28,883.16-11,976.30

Finding the Fourth Proportional to 20,925.99, 28,883.16 and 11,976.30

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Solution

The fourth proportional to 20,925.99, 28,883.16 and 11,976.30 is: 16,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.99 : 28,883.16 = 11,976.30 : x
  2. Step 2: Convert to fraction form
    20,925.99/28,883.16 = 11,976.30/x
  3. Step 3: Cross multiply
    20,925.99x = 28,883.16 × 11,976.30
  4. Step 4: Simplify right side
    20,925.99x = 345,913,389.11
  5. Step 5: Solve for x
    x = 345,913,389.11/20,925.99
  6. Step 6: Final answer
    x = 16,530.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.