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Finding the Fourth Proportional to 11,000.45, 15,422.50 and 11,000.45

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Solution

The fourth proportional to 11,000.45, 15,422.50 and 11,000.45 is: 15,422.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.45 : 15,422.50 = 11,000.45 : x
  2. Step 2: Convert to fraction form
    11,000.45/15,422.50 = 11,000.45/x
  3. Step 3: Cross multiply
    11,000.45x = 15,422.50 × 11,000.45
  4. Step 4: Simplify right side
    11,000.45x = 169,654,440.13
  5. Step 5: Solve for x
    x = 169,654,440.13/11,000.45
  6. Step 6: Final answer
    x = 15,422.50

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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.