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Finding the Fourth Proportional to 15,488.30, 21,375.67 and 9,200.67

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Solution

The fourth proportional to 15,488.30, 21,375.67 and 9,200.67 is: 12,698.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.30 : 21,375.67 = 9,200.67 : x
  2. Step 2: Convert to fraction form
    15,488.30/21,375.67 = 9,200.67/x
  3. Step 3: Cross multiply
    15,488.30x = 21,375.67 × 9,200.67
  4. Step 4: Simplify right side
    15,488.30x = 196,670,545.90
  5. Step 5: Solve for x
    x = 196,670,545.90/15,488.30
  6. Step 6: Final answer
    x = 12,698.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.