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Finding the Fourth Proportional to 14,615.40, 21,923.10 and 11,699.40

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Solution

The fourth proportional to 14,615.40, 21,923.10 and 11,699.40 is: 17,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.40 : 21,923.10 = 11,699.40 : x
  2. Step 2: Convert to fraction form
    14,615.40/21,923.10 = 11,699.40/x
  3. Step 3: Cross multiply
    14,615.40x = 21,923.10 × 11,699.40
  4. Step 4: Simplify right side
    14,615.40x = 256,487,116.14
  5. Step 5: Solve for x
    x = 256,487,116.14/14,615.40
  6. Step 6: Final answer
    x = 17,549.10

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Similar ratio
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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.