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Finding the Fourth Proportional to 14,236.63, 21,368.07 and 7,221.57

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Solution

The fourth proportional to 14,236.63, 21,368.07 and 7,221.57 is: 10,839.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,236.63 : 21,368.07 = 7,221.57 : x
  2. Step 2: Convert to fraction form
    14,236.63/21,368.07 = 7,221.57/x
  3. Step 3: Cross multiply
    14,236.63x = 21,368.07 × 7,221.57
  4. Step 4: Simplify right side
    14,236.63x = 154,311,013.27
  5. Step 5: Solve for x
    x = 154,311,013.27/14,236.63
  6. Step 6: Final answer
    x = 10,839.01

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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.