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Finding the Fourth Proportional to 15,017.81, 20,724.21 and 8,303.27

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Solution

The fourth proportional to 15,017.81, 20,724.21 and 8,303.27 is: 11,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.81 : 20,724.21 = 8,303.27 : x
  2. Step 2: Convert to fraction form
    15,017.81/20,724.21 = 8,303.27/x
  3. Step 3: Cross multiply
    15,017.81x = 20,724.21 × 8,303.27
  4. Step 4: Simplify right side
    15,017.81x = 172,078,566.03
  5. Step 5: Solve for x
    x = 172,078,566.03/15,017.81
  6. Step 6: Final answer
    x = 11,458.30

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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.