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Finding the Fourth Proportional to 18,421.01, 27,623.40 and 5,270.39

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Solution

The fourth proportional to 18,421.01, 27,623.40 and 5,270.39 is: 7,903.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.01 : 27,623.40 = 5,270.39 : x
  2. Step 2: Convert to fraction form
    18,421.01/27,623.40 = 5,270.39/x
  3. Step 3: Cross multiply
    18,421.01x = 27,623.40 × 5,270.39
  4. Step 4: Simplify right side
    18,421.01x = 145,586,091.13
  5. Step 5: Solve for x
    x = 145,586,091.13/18,421.01
  6. Step 6: Final answer
    x = 7,903.26

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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.