Home / 31,564.95-43,564.35-20,247.21

Finding the Fourth Proportional to 31,564.95, 43,564.35 and 20,247.21

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Solution

The fourth proportional to 31,564.95, 43,564.35 and 20,247.21 is: 27,944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.95 : 43,564.35 = 20,247.21 : x
  2. Step 2: Convert to fraction form
    31,564.95/43,564.35 = 20,247.21/x
  3. Step 3: Cross multiply
    31,564.95x = 43,564.35 × 20,247.21
  4. Step 4: Simplify right side
    31,564.95x = 882,056,542.96
  5. Step 5: Solve for x
    x = 882,056,542.96/31,564.95
  6. Step 6: Final answer
    x = 27,944.18

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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.