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Finding the Fourth Proportional to 9,090.48, 13,652.16 and 8,358.72

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Solution

The fourth proportional to 9,090.48, 13,652.16 and 8,358.72 is: 12,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.48 : 13,652.16 = 8,358.72 : x
  2. Step 2: Convert to fraction form
    9,090.48/13,652.16 = 8,358.72/x
  3. Step 3: Cross multiply
    9,090.48x = 13,652.16 × 8,358.72
  4. Step 4: Simplify right side
    9,090.48x = 114,114,582.84
  5. Step 5: Solve for x
    x = 114,114,582.84/9,090.48
  6. Step 6: Final answer
    x = 12,553.20

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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.