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Finding the Fourth Proportional to 14,079, 21,125.79 and 7,153.50

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Solution

The fourth proportional to 14,079, 21,125.79 and 7,153.50 is: 10,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079 : 21,125.79 = 7,153.50 : x
  2. Step 2: Convert to fraction form
    14,079/21,125.79 = 7,153.50/x
  3. Step 3: Cross multiply
    14,079x = 21,125.79 × 7,153.50
  4. Step 4: Simplify right side
    14,079x = 151,123,338.77
  5. Step 5: Solve for x
    x = 151,123,338.77/14,079
  6. Step 6: Final answer
    x = 10,733.95

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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.