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Finding the Fourth Proportional to 15,102.06, 20,847.81 and 9,055.16

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Solution

The fourth proportional to 15,102.06, 20,847.81 and 9,055.16 is: 12,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.06 : 20,847.81 = 9,055.16 : x
  2. Step 2: Convert to fraction form
    15,102.06/20,847.81 = 9,055.16/x
  3. Step 3: Cross multiply
    15,102.06x = 20,847.81 × 9,055.16
  4. Step 4: Simplify right side
    15,102.06x = 188,780,255.20
  5. Step 5: Solve for x
    x = 188,780,255.20/15,102.06
  6. Step 6: Final answer
    x = 12,500.30

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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.