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Finding the Fourth Proportional to 19,009.64, 28,496.81 and 9,019.08

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Solution

The fourth proportional to 19,009.64, 28,496.81 and 9,019.08 is: 13,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.64 : 28,496.81 = 9,019.08 : x
  2. Step 2: Convert to fraction form
    19,009.64/28,496.81 = 9,019.08/x
  3. Step 3: Cross multiply
    19,009.64x = 28,496.81 × 9,019.08
  4. Step 4: Simplify right side
    19,009.64x = 257,015,009.13
  5. Step 5: Solve for x
    x = 257,015,009.13/19,009.64
  6. Step 6: Final answer
    x = 13,520.25

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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.