Home / 31,358.56-47,038.32-7,985.44

Finding the Fourth Proportional to 31,358.56, 47,038.32 and 7,985.44

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Solution

The fourth proportional to 31,358.56, 47,038.32 and 7,985.44 is: 11,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,358.56 : 47,038.32 = 7,985.44 : x
  2. Step 2: Convert to fraction form
    31,358.56/47,038.32 = 7,985.44/x
  3. Step 3: Cross multiply
    31,358.56x = 47,038.32 × 7,985.44
  4. Step 4: Simplify right side
    31,358.56x = 375,621,682.06
  5. Step 5: Solve for x
    x = 375,621,682.06/31,358.56
  6. Step 6: Final answer
    x = 11,978.28

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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.