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Finding the Fourth Proportional to 15,473.97, 21,353.90 and 9,104.67

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Solution

The fourth proportional to 15,473.97, 21,353.90 and 9,104.67 is: 12,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.97 : 21,353.90 = 9,104.67 : x
  2. Step 2: Convert to fraction form
    15,473.97/21,353.90 = 9,104.67/x
  3. Step 3: Cross multiply
    15,473.97x = 21,353.90 × 9,104.67
  4. Step 4: Simplify right side
    15,473.97x = 194,420,167.19
  5. Step 5: Solve for x
    x = 194,420,167.19/15,473.97
  6. Step 6: Final answer
    x = 12,564.34

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.