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Finding the Fourth Proportional to 18,841.71, 28,266.57 and 7,154.67

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Solution

The fourth proportional to 18,841.71, 28,266.57 and 7,154.67 is: 10,733.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.71 : 28,266.57 = 7,154.67 : x
  2. Step 2: Convert to fraction form
    18,841.71/28,266.57 = 7,154.67/x
  3. Step 3: Cross multiply
    18,841.71x = 28,266.57 × 7,154.67
  4. Step 4: Simplify right side
    18,841.71x = 202,237,944.61
  5. Step 5: Solve for x
    x = 202,237,944.61/18,841.71
  6. Step 6: Final answer
    x = 10,733.52

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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.