Home / 18,663.24-27,999.36-5,515.32

Finding the Fourth Proportional to 18,663.24, 27,999.36 and 5,515.32

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Solution

The fourth proportional to 18,663.24, 27,999.36 and 5,515.32 is: 8,274.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.24 : 27,999.36 = 5,515.32 : x
  2. Step 2: Convert to fraction form
    18,663.24/27,999.36 = 5,515.32/x
  3. Step 3: Cross multiply
    18,663.24x = 27,999.36 × 5,515.32
  4. Step 4: Simplify right side
    18,663.24x = 154,425,430.20
  5. Step 5: Solve for x
    x = 154,425,430.20/18,663.24
  6. Step 6: Final answer
    x = 8,274.31

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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.