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Finding the Fourth Proportional to 13,914.99, 20,858.58 and 8,988.12

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Solution

The fourth proportional to 13,914.99, 20,858.58 and 8,988.12 is: 13,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.99 : 20,858.58 = 8,988.12 : x
  2. Step 2: Convert to fraction form
    13,914.99/20,858.58 = 8,988.12/x
  3. Step 3: Cross multiply
    13,914.99x = 20,858.58 × 8,988.12
  4. Step 4: Simplify right side
    13,914.99x = 187,479,420.07
  5. Step 5: Solve for x
    x = 187,479,420.07/13,914.99
  6. Step 6: Final answer
    x = 13,473.20

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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.