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Finding the Fourth Proportional to 36,015.40, 53,979.90 and 18,476.20

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Solution

The fourth proportional to 36,015.40, 53,979.90 and 18,476.20 is: 27,692.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,015.40 : 53,979.90 = 18,476.20 : x
  2. Step 2: Convert to fraction form
    36,015.40/53,979.90 = 18,476.20/x
  3. Step 3: Cross multiply
    36,015.40x = 53,979.90 × 18,476.20
  4. Step 4: Simplify right side
    36,015.40x = 997,343,428.38
  5. Step 5: Solve for x
    x = 997,343,428.38/36,015.40
  6. Step 6: Final answer
    x = 27,692.14

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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.