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Finding the Fourth Proportional to 15,218.72, 22,810.08 and 7,409.60

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Solution

The fourth proportional to 15,218.72, 22,810.08 and 7,409.60 is: 11,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.72 : 22,810.08 = 7,409.60 : x
  2. Step 2: Convert to fraction form
    15,218.72/22,810.08 = 7,409.60/x
  3. Step 3: Cross multiply
    15,218.72x = 22,810.08 × 7,409.60
  4. Step 4: Simplify right side
    15,218.72x = 169,013,568.77
  5. Step 5: Solve for x
    x = 169,013,568.77/15,218.72
  6. Step 6: Final answer
    x = 11,105.64

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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.