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Finding the Fourth Proportional to 18,485.28, 27,698.76 and 10,152.81

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Solution

The fourth proportional to 18,485.28, 27,698.76 and 10,152.81 is: 15,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.28 : 27,698.76 = 10,152.81 : x
  2. Step 2: Convert to fraction form
    18,485.28/27,698.76 = 10,152.81/x
  3. Step 3: Cross multiply
    18,485.28x = 27,698.76 × 10,152.81
  4. Step 4: Simplify right side
    18,485.28x = 281,220,247.52
  5. Step 5: Solve for x
    x = 281,220,247.52/18,485.28
  6. Step 6: Final answer
    x = 15,213.20

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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.