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Finding the Fourth Proportional to 18,338.80, 27,509.10 and 9,590.80

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Solution

The fourth proportional to 18,338.80, 27,509.10 and 9,590.80 is: 14,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.80 : 27,509.10 = 9,590.80 : x
  2. Step 2: Convert to fraction form
    18,338.80/27,509.10 = 9,590.80/x
  3. Step 3: Cross multiply
    18,338.80x = 27,509.10 × 9,590.80
  4. Step 4: Simplify right side
    18,338.80x = 263,834,276.28
  5. Step 5: Solve for x
    x = 263,834,276.28/18,338.80
  6. Step 6: Final answer
    x = 14,386.67

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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.