Home / 38,631.99-57,969.90-20,862.45

Finding the Fourth Proportional to 38,631.99, 57,969.90 and 20,862.45

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Solution

The fourth proportional to 38,631.99, 57,969.90 and 20,862.45 is: 31,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631.99 : 57,969.90 = 20,862.45 : x
  2. Step 2: Convert to fraction form
    38,631.99/57,969.90 = 20,862.45/x
  3. Step 3: Cross multiply
    38,631.99x = 57,969.90 × 20,862.45
  4. Step 4: Simplify right side
    38,631.99x = 1,209,394,140.26
  5. Step 5: Solve for x
    x = 1,209,394,140.26/38,631.99
  6. Step 6: Final answer
    x = 31,305.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.