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Finding the Fourth Proportional to 11,493.76, 17,214.72 and 9,420.16

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Solution

The fourth proportional to 11,493.76, 17,214.72 and 9,420.16 is: 14,109.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,493.76 : 17,214.72 = 9,420.16 : x
  2. Step 2: Convert to fraction form
    11,493.76/17,214.72 = 9,420.16/x
  3. Step 3: Cross multiply
    11,493.76x = 17,214.72 × 9,420.16
  4. Step 4: Simplify right side
    11,493.76x = 162,165,416.76
  5. Step 5: Solve for x
    x = 162,165,416.76/11,493.76
  6. Step 6: Final answer
    x = 14,109.00

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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.