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Finding the Fourth Proportional to 13,331.88, 20,009.95 and 7,097.11

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Solution

The fourth proportional to 13,331.88, 20,009.95 and 7,097.11 is: 10,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.88 : 20,009.95 = 7,097.11 : x
  2. Step 2: Convert to fraction form
    13,331.88/20,009.95 = 7,097.11/x
  3. Step 3: Cross multiply
    13,331.88x = 20,009.95 × 7,097.11
  4. Step 4: Simplify right side
    13,331.88x = 142,012,748.48
  5. Step 5: Solve for x
    x = 142,012,748.48/13,331.88
  6. Step 6: Final answer
    x = 10,652.12

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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.