Home / 20,908.08-28,836.24-18,384.92

Finding the Fourth Proportional to 20,908.08, 28,836.24 and 18,384.92

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Solution

The fourth proportional to 20,908.08, 28,836.24 and 18,384.92 is: 25,356.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.08 : 28,836.24 = 18,384.92 : x
  2. Step 2: Convert to fraction form
    20,908.08/28,836.24 = 18,384.92/x
  3. Step 3: Cross multiply
    20,908.08x = 28,836.24 × 18,384.92
  4. Step 4: Simplify right side
    20,908.08x = 530,151,965.50
  5. Step 5: Solve for x
    x = 530,151,965.50/20,908.08
  6. Step 6: Final answer
    x = 25,356.32

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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.