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Finding the Fourth Proportional to 14,699.19, 20,285.03 and 7,984.94

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Solution

The fourth proportional to 14,699.19, 20,285.03 and 7,984.94 is: 11,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,699.19 : 20,285.03 = 7,984.94 : x
  2. Step 2: Convert to fraction form
    14,699.19/20,285.03 = 7,984.94/x
  3. Step 3: Cross multiply
    14,699.19x = 20,285.03 × 7,984.94
  4. Step 4: Simplify right side
    14,699.19x = 161,974,747.45
  5. Step 5: Solve for x
    x = 161,974,747.45/14,699.19
  6. Step 6: Final answer
    x = 11,019.30

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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.