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Finding the Fourth Proportional to 18,115.32, 25,000.07 and 10,157.07

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Solution

The fourth proportional to 18,115.32, 25,000.07 and 10,157.07 is: 14,017.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.32 : 25,000.07 = 10,157.07 : x
  2. Step 2: Convert to fraction form
    18,115.32/25,000.07 = 10,157.07/x
  3. Step 3: Cross multiply
    18,115.32x = 25,000.07 × 10,157.07
  4. Step 4: Simplify right side
    18,115.32x = 253,927,410.21
  5. Step 5: Solve for x
    x = 253,927,410.21/18,115.32
  6. Step 6: Final answer
    x = 14,017.27

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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.