Home / 31,210.31-43,070.23-20,051.75

Finding the Fourth Proportional to 31,210.31, 43,070.23 and 20,051.75

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Solution

The fourth proportional to 31,210.31, 43,070.23 and 20,051.75 is: 27,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.31 : 43,070.23 = 20,051.75 : x
  2. Step 2: Convert to fraction form
    31,210.31/43,070.23 = 20,051.75/x
  3. Step 3: Cross multiply
    31,210.31x = 43,070.23 × 20,051.75
  4. Step 4: Simplify right side
    31,210.31x = 863,633,617.14
  5. Step 5: Solve for x
    x = 863,633,617.14/31,210.31
  6. Step 6: Final answer
    x = 27,671.42

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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.