Home / 18,438.66-25,447.10-10,887.30

Finding the Fourth Proportional to 18,438.66, 25,447.10 and 10,887.30

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Solution

The fourth proportional to 18,438.66, 25,447.10 and 10,887.30 is: 15,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.66 : 25,447.10 = 10,887.30 : x
  2. Step 2: Convert to fraction form
    18,438.66/25,447.10 = 10,887.30/x
  3. Step 3: Cross multiply
    18,438.66x = 25,447.10 × 10,887.30
  4. Step 4: Simplify right side
    18,438.66x = 277,050,157.39
  5. Step 5: Solve for x
    x = 277,050,157.39/18,438.66
  6. Step 6: Final answer
    x = 15,025.50

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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.