Home / 31,346.78-47,020.28-7,973.22

Finding the Fourth Proportional to 31,346.78, 47,020.28 and 7,973.22

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Solution

The fourth proportional to 31,346.78, 47,020.28 and 7,973.22 is: 11,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,346.78 : 47,020.28 = 7,973.22 : x
  2. Step 2: Convert to fraction form
    31,346.78/47,020.28 = 7,973.22/x
  3. Step 3: Cross multiply
    31,346.78x = 47,020.28 × 7,973.22
  4. Step 4: Simplify right side
    31,346.78x = 374,903,036.90
  5. Step 5: Solve for x
    x = 374,903,036.90/31,346.78
  6. Step 6: Final answer
    x = 11,959.86

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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.