Home / 31,692.04-43,741.96-20,938.68

Finding the Fourth Proportional to 31,692.04, 43,741.96 and 20,938.68

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Solution

The fourth proportional to 31,692.04, 43,741.96 and 20,938.68 is: 28,899.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,692.04 : 43,741.96 = 20,938.68 : x
  2. Step 2: Convert to fraction form
    31,692.04/43,741.96 = 20,938.68/x
  3. Step 3: Cross multiply
    31,692.04x = 43,741.96 × 20,938.68
  4. Step 4: Simplify right side
    31,692.04x = 915,898,903.01
  5. Step 5: Solve for x
    x = 915,898,903.01/31,692.04
  6. Step 6: Final answer
    x = 28,899.97

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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.