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Finding the Fourth Proportional to 13,663.30, 19,167.50 and 13,663.30

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Solution

The fourth proportional to 13,663.30, 19,167.50 and 13,663.30 is: 19,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.30 : 19,167.50 = 13,663.30 : x
  2. Step 2: Convert to fraction form
    13,663.30/19,167.50 = 13,663.30/x
  3. Step 3: Cross multiply
    13,663.30x = 19,167.50 × 13,663.30
  4. Step 4: Simplify right side
    13,663.30x = 261,891,302.75
  5. Step 5: Solve for x
    x = 261,891,302.75/13,663.30
  6. Step 6: Final answer
    x = 19,167.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.