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Finding the Fourth Proportional to 14,977.50, 20,668.95 and 8,353.50

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Solution

The fourth proportional to 14,977.50, 20,668.95 and 8,353.50 is: 11,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,977.50 : 20,668.95 = 8,353.50 : x
  2. Step 2: Convert to fraction form
    14,977.50/20,668.95 = 8,353.50/x
  3. Step 3: Cross multiply
    14,977.50x = 20,668.95 × 8,353.50
  4. Step 4: Simplify right side
    14,977.50x = 172,658,073.83
  5. Step 5: Solve for x
    x = 172,658,073.83/14,977.50
  6. Step 6: Final answer
    x = 11,527.83

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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.