Home / 31,739.08-43,802.76-20,435.58

Finding the Fourth Proportional to 31,739.08, 43,802.76 and 20,435.58

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Solution

The fourth proportional to 31,739.08, 43,802.76 and 20,435.58 is: 28,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,739.08 : 43,802.76 = 20,435.58 : x
  2. Step 2: Convert to fraction form
    31,739.08/43,802.76 = 20,435.58/x
  3. Step 3: Cross multiply
    31,739.08x = 43,802.76 × 20,435.58
  4. Step 4: Simplify right side
    31,739.08x = 895,134,792.50
  5. Step 5: Solve for x
    x = 895,134,792.50/31,739.08
  6. Step 6: Final answer
    x = 28,202.92

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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.