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Finding the Fourth Proportional to 15,090.40, 22,657.20 and 8,529.40

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Solution

The fourth proportional to 15,090.40, 22,657.20 and 8,529.40 is: 12,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.40 : 22,657.20 = 8,529.40 : x
  2. Step 2: Convert to fraction form
    15,090.40/22,657.20 = 8,529.40/x
  3. Step 3: Cross multiply
    15,090.40x = 22,657.20 × 8,529.40
  4. Step 4: Simplify right side
    15,090.40x = 193,252,321.68
  5. Step 5: Solve for x
    x = 193,252,321.68/15,090.40
  6. Step 6: Final answer
    x = 12,806.31

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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.