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Finding the Fourth Proportional to 14,123.84, 19,486.44 and 8,154.72

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Solution

The fourth proportional to 14,123.84, 19,486.44 and 8,154.72 is: 11,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.84 : 19,486.44 = 8,154.72 : x
  2. Step 2: Convert to fraction form
    14,123.84/19,486.44 = 8,154.72/x
  3. Step 3: Cross multiply
    14,123.84x = 19,486.44 × 8,154.72
  4. Step 4: Simplify right side
    14,123.84x = 158,906,462.00
  5. Step 5: Solve for x
    x = 158,906,462.00/14,123.84
  6. Step 6: Final answer
    x = 11,250.94

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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.