Home / 27,138.79-40,638.08-18,731.24

Finding the Fourth Proportional to 27,138.79, 40,638.08 and 18,731.24

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Solution

The fourth proportional to 27,138.79, 40,638.08 and 18,731.24 is: 28,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.79 : 40,638.08 = 18,731.24 : x
  2. Step 2: Convert to fraction form
    27,138.79/40,638.08 = 18,731.24/x
  3. Step 3: Cross multiply
    27,138.79x = 40,638.08 × 18,731.24
  4. Step 4: Simplify right side
    27,138.79x = 761,201,629.62
  5. Step 5: Solve for x
    x = 761,201,629.62/27,138.79
  6. Step 6: Final answer
    x = 28,048.47

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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.