Home / 31,256.32-43,129.60-20,076.16

Finding the Fourth Proportional to 31,256.32, 43,129.60 and 20,076.16

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Solution

The fourth proportional to 31,256.32, 43,129.60 and 20,076.16 is: 27,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,256.32 : 43,129.60 = 20,076.16 : x
  2. Step 2: Convert to fraction form
    31,256.32/43,129.60 = 20,076.16/x
  3. Step 3: Cross multiply
    31,256.32x = 43,129.60 × 20,076.16
  4. Step 4: Simplify right side
    31,256.32x = 865,876,750.34
  5. Step 5: Solve for x
    x = 865,876,750.34/31,256.32
  6. Step 6: Final answer
    x = 27,702.45

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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.