Home / 15,162.90-20,930.81-13,029.96

Finding the Fourth Proportional to 15,162.90, 20,930.81 and 13,029.96

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Solution

The fourth proportional to 15,162.90, 20,930.81 and 13,029.96 is: 17,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.90 : 20,930.81 = 13,029.96 : x
  2. Step 2: Convert to fraction form
    15,162.90/20,930.81 = 13,029.96/x
  3. Step 3: Cross multiply
    15,162.90x = 20,930.81 × 13,029.96
  4. Step 4: Simplify right side
    15,162.90x = 272,727,630.41
  5. Step 5: Solve for x
    x = 272,727,630.41/15,162.90
  6. Step 6: Final answer
    x = 17,986.51

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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.