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Finding the Fourth Proportional to 19,020.52, 28,507.02 and 9,157.16

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Solution

The fourth proportional to 19,020.52, 28,507.02 and 9,157.16 is: 13,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.52 : 28,507.02 = 9,157.16 : x
  2. Step 2: Convert to fraction form
    19,020.52/28,507.02 = 9,157.16/x
  3. Step 3: Cross multiply
    19,020.52x = 28,507.02 × 9,157.16
  4. Step 4: Simplify right side
    19,020.52x = 261,043,343.26
  5. Step 5: Solve for x
    x = 261,043,343.26/19,020.52
  6. Step 6: Final answer
    x = 13,724.30

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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.