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Finding the Fourth Proportional to 13,900.69, 20,798.72 and 9,748.80

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Solution

The fourth proportional to 13,900.69, 20,798.72 and 9,748.80 is: 14,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.69 : 20,798.72 = 9,748.80 : x
  2. Step 2: Convert to fraction form
    13,900.69/20,798.72 = 9,748.80/x
  3. Step 3: Cross multiply
    13,900.69x = 20,798.72 × 9,748.80
  4. Step 4: Simplify right side
    13,900.69x = 202,762,512.79
  5. Step 5: Solve for x
    x = 202,762,512.79/13,900.69
  6. Step 6: Final answer
    x = 14,586.51

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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.