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Finding the Fourth Proportional to 15,015.81, 20,724.33 and 9,048.03

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Solution

The fourth proportional to 15,015.81, 20,724.33 and 9,048.03 is: 12,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.81 : 20,724.33 = 9,048.03 : x
  2. Step 2: Convert to fraction form
    15,015.81/20,724.33 = 9,048.03/x
  3. Step 3: Cross multiply
    15,015.81x = 20,724.33 × 9,048.03
  4. Step 4: Simplify right side
    15,015.81x = 187,514,359.57
  5. Step 5: Solve for x
    x = 187,514,359.57/15,015.81
  6. Step 6: Final answer
    x = 12,487.80

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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.