Home / 31,663.34-43,676.38-20,908.32

Finding the Fourth Proportional to 31,663.34, 43,676.38 and 20,908.32

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Solution

The fourth proportional to 31,663.34, 43,676.38 and 20,908.32 is: 28,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.34 : 43,676.38 = 20,908.32 : x
  2. Step 2: Convert to fraction form
    31,663.34/43,676.38 = 20,908.32/x
  3. Step 3: Cross multiply
    31,663.34x = 43,676.38 × 20,908.32
  4. Step 4: Simplify right side
    31,663.34x = 913,199,729.48
  5. Step 5: Solve for x
    x = 913,199,729.48/31,663.34
  6. Step 6: Final answer
    x = 28,840.92

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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.