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Finding the Fourth Proportional to 20,591.51, 30,887.26 and 5,009.00

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Solution

The fourth proportional to 20,591.51, 30,887.26 and 5,009.00 is: 7,513.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.51 : 30,887.26 = 5,009.00 : x
  2. Step 2: Convert to fraction form
    20,591.51/30,887.26 = 5,009.00/x
  3. Step 3: Cross multiply
    20,591.51x = 30,887.26 × 5,009.00
  4. Step 4: Simplify right side
    20,591.51x = 154,714,118.38
  5. Step 5: Solve for x
    x = 154,714,118.38/20,591.51
  6. Step 6: Final answer
    x = 7,513.49

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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.