Home / 31,033.28-42,829.08-18,290.42

Finding the Fourth Proportional to 31,033.28, 42,829.08 and 18,290.42

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Solution

The fourth proportional to 31,033.28, 42,829.08 and 18,290.42 is: 25,242.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,033.28 : 42,829.08 = 18,290.42 : x
  2. Step 2: Convert to fraction form
    31,033.28/42,829.08 = 18,290.42/x
  3. Step 3: Cross multiply
    31,033.28x = 42,829.08 × 18,290.42
  4. Step 4: Simplify right side
    31,033.28x = 783,361,861.41
  5. Step 5: Solve for x
    x = 783,361,861.41/31,033.28
  6. Step 6: Final answer
    x = 25,242.64

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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.