Home / 31,985.36-47,953.26-21,438.48

Finding the Fourth Proportional to 31,985.36, 47,953.26 and 21,438.48

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Solution

The fourth proportional to 31,985.36, 47,953.26 and 21,438.48 is: 32,141.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.36 : 47,953.26 = 21,438.48 : x
  2. Step 2: Convert to fraction form
    31,985.36/47,953.26 = 21,438.48/x
  3. Step 3: Cross multiply
    31,985.36x = 47,953.26 × 21,438.48
  4. Step 4: Simplify right side
    31,985.36x = 1,028,045,005.44
  5. Step 5: Solve for x
    x = 1,028,045,005.44/31,985.36
  6. Step 6: Final answer
    x = 32,141.12

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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.