Home / 31,688.78-47,579.90-17,676.19

Finding the Fourth Proportional to 31,688.78, 47,579.90 and 17,676.19

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Solution

The fourth proportional to 31,688.78, 47,579.90 and 17,676.19 is: 26,540.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.78 : 47,579.90 = 17,676.19 : x
  2. Step 2: Convert to fraction form
    31,688.78/47,579.90 = 17,676.19/x
  3. Step 3: Cross multiply
    31,688.78x = 47,579.90 × 17,676.19
  4. Step 4: Simplify right side
    31,688.78x = 841,031,114.68
  5. Step 5: Solve for x
    x = 841,031,114.68/31,688.78
  6. Step 6: Final answer
    x = 26,540.34

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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.