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Finding the Fourth Proportional to 18,710.72, 25,820.41 and 10,213.01

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Solution

The fourth proportional to 18,710.72, 25,820.41 and 10,213.01 is: 14,093.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.72 : 25,820.41 = 10,213.01 : x
  2. Step 2: Convert to fraction form
    18,710.72/25,820.41 = 10,213.01/x
  3. Step 3: Cross multiply
    18,710.72x = 25,820.41 × 10,213.01
  4. Step 4: Simplify right side
    18,710.72x = 263,704,054.47
  5. Step 5: Solve for x
    x = 263,704,054.47/18,710.72
  6. Step 6: Final answer
    x = 14,093.74

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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.