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Finding the Fourth Proportional to 14,748.76, 20,353.28 and 8,124.76

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Solution

The fourth proportional to 14,748.76, 20,353.28 and 8,124.76 is: 11,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,748.76 : 20,353.28 = 8,124.76 : x
  2. Step 2: Convert to fraction form
    14,748.76/20,353.28 = 8,124.76/x
  3. Step 3: Cross multiply
    14,748.76x = 20,353.28 × 8,124.76
  4. Step 4: Simplify right side
    14,748.76x = 165,365,515.21
  5. Step 5: Solve for x
    x = 165,365,515.21/14,748.76
  6. Step 6: Final answer
    x = 11,212.16

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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.