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Finding the Fourth Proportional to 14,553.70, 21,840.15 and 5,319.70

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Solution

The fourth proportional to 14,553.70, 21,840.15 and 5,319.70 is: 7,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,553.70 : 21,840.15 = 5,319.70 : x
  2. Step 2: Convert to fraction form
    14,553.70/21,840.15 = 5,319.70/x
  3. Step 3: Cross multiply
    14,553.70x = 21,840.15 × 5,319.70
  4. Step 4: Simplify right side
    14,553.70x = 116,183,045.96
  5. Step 5: Solve for x
    x = 116,183,045.96/14,553.70
  6. Step 6: Final answer
    x = 7,983.06

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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.