Home / 10,017.91-15,039.60-8,172.64

Finding the Fourth Proportional to 10,017.91, 15,039.60 and 8,172.64

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Solution

The fourth proportional to 10,017.91, 15,039.60 and 8,172.64 is: 12,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,017.91 : 15,039.60 = 8,172.64 : x
  2. Step 2: Convert to fraction form
    10,017.91/15,039.60 = 8,172.64/x
  3. Step 3: Cross multiply
    10,017.91x = 15,039.60 × 8,172.64
  4. Step 4: Simplify right side
    10,017.91x = 122,913,236.54
  5. Step 5: Solve for x
    x = 122,913,236.54/10,017.91
  6. Step 6: Final answer
    x = 12,269.35

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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.