Home / 31,975.72-44,079.12-20,644.36

Finding the Fourth Proportional to 31,975.72, 44,079.12 and 20,644.36

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Solution

The fourth proportional to 31,975.72, 44,079.12 and 20,644.36 is: 28,458.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,975.72 : 44,079.12 = 20,644.36 : x
  2. Step 2: Convert to fraction form
    31,975.72/44,079.12 = 20,644.36/x
  3. Step 3: Cross multiply
    31,975.72x = 44,079.12 × 20,644.36
  4. Step 4: Simplify right side
    31,975.72x = 909,985,221.76
  5. Step 5: Solve for x
    x = 909,985,221.76/31,975.72
  6. Step 6: Final answer
    x = 28,458.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.