Home / 18,807.06-28,155.22-13,898.58

Finding the Fourth Proportional to 18,807.06, 28,155.22 and 13,898.58

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Solution

The fourth proportional to 18,807.06, 28,155.22 and 13,898.58 is: 20,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.06 : 28,155.22 = 13,898.58 : x
  2. Step 2: Convert to fraction form
    18,807.06/28,155.22 = 13,898.58/x
  3. Step 3: Cross multiply
    18,807.06x = 28,155.22 × 13,898.58
  4. Step 4: Simplify right side
    18,807.06x = 391,317,577.59
  5. Step 5: Solve for x
    x = 391,317,577.59/18,807.06
  6. Step 6: Final answer
    x = 20,806.95

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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.