Home / 18,715.24-28,071.85-11,317.71

Finding the Fourth Proportional to 18,715.24, 28,071.85 and 11,317.71

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Solution

The fourth proportional to 18,715.24, 28,071.85 and 11,317.71 is: 16,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.24 : 28,071.85 = 11,317.71 : x
  2. Step 2: Convert to fraction form
    18,715.24/28,071.85 = 11,317.71/x
  3. Step 3: Cross multiply
    18,715.24x = 28,071.85 × 11,317.71
  4. Step 4: Simplify right side
    18,715.24x = 317,709,057.46
  5. Step 5: Solve for x
    x = 317,709,057.46/18,715.24
  6. Step 6: Final answer
    x = 16,975.95

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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.