Home / 31,698.72-43,725.06-20,364.36

Finding the Fourth Proportional to 31,698.72, 43,725.06 and 20,364.36

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Solution

The fourth proportional to 31,698.72, 43,725.06 and 20,364.36 is: 28,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.72 : 43,725.06 = 20,364.36 : x
  2. Step 2: Convert to fraction form
    31,698.72/43,725.06 = 20,364.36/x
  3. Step 3: Cross multiply
    31,698.72x = 43,725.06 × 20,364.36
  4. Step 4: Simplify right side
    31,698.72x = 890,432,862.86
  5. Step 5: Solve for x
    x = 890,432,862.86/31,698.72
  6. Step 6: Final answer
    x = 28,090.50

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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.