Home / 31,858.48-43,971.96-20,661.04

Finding the Fourth Proportional to 31,858.48, 43,971.96 and 20,661.04

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Solution

The fourth proportional to 31,858.48, 43,971.96 and 20,661.04 is: 28,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,858.48 : 43,971.96 = 20,661.04 : x
  2. Step 2: Convert to fraction form
    31,858.48/43,971.96 = 20,661.04/x
  3. Step 3: Cross multiply
    31,858.48x = 43,971.96 × 20,661.04
  4. Step 4: Simplify right side
    31,858.48x = 908,506,424.44
  5. Step 5: Solve for x
    x = 908,506,424.44/31,858.48
  6. Step 6: Final answer
    x = 28,516.94

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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.