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Finding the Fourth Proportional to 14,927.76, 20,600.64 and 8,213.74

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Solution

The fourth proportional to 14,927.76, 20,600.64 and 8,213.74 is: 11,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,927.76 : 20,600.64 = 8,213.74 : x
  2. Step 2: Convert to fraction form
    14,927.76/20,600.64 = 8,213.74/x
  3. Step 3: Cross multiply
    14,927.76x = 20,600.64 × 8,213.74
  4. Step 4: Simplify right side
    14,927.76x = 169,208,249.29
  5. Step 5: Solve for x
    x = 169,208,249.29/14,927.76
  6. Step 6: Final answer
    x = 11,335.14

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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.