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Finding the Fourth Proportional to 18,303.39, 27,454.95 and 5,155.67

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Solution

The fourth proportional to 18,303.39, 27,454.95 and 5,155.67 is: 7,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.39 : 27,454.95 = 5,155.67 : x
  2. Step 2: Convert to fraction form
    18,303.39/27,454.95 = 5,155.67/x
  3. Step 3: Cross multiply
    18,303.39x = 27,454.95 × 5,155.67
  4. Step 4: Simplify right side
    18,303.39x = 141,548,730.70
  5. Step 5: Solve for x
    x = 141,548,730.70/18,303.39
  6. Step 6: Final answer
    x = 7,733.47

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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.