Home / 21,033.81-31,538.88-6,986.32

Finding the Fourth Proportional to 21,033.81, 31,538.88 and 6,986.32

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Solution

The fourth proportional to 21,033.81, 31,538.88 and 6,986.32 is: 10,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.81 : 31,538.88 = 6,986.32 : x
  2. Step 2: Convert to fraction form
    21,033.81/31,538.88 = 6,986.32/x
  3. Step 3: Cross multiply
    21,033.81x = 31,538.88 × 6,986.32
  4. Step 4: Simplify right side
    21,033.81x = 220,340,629.27
  5. Step 5: Solve for x
    x = 220,340,629.27/21,033.81
  6. Step 6: Final answer
    x = 10,475.55

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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.