Home / 18,740.32-28,110.48-4,889.32

Finding the Fourth Proportional to 18,740.32, 28,110.48 and 4,889.32

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Solution

The fourth proportional to 18,740.32, 28,110.48 and 4,889.32 is: 7,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.32 : 28,110.48 = 4,889.32 : x
  2. Step 2: Convert to fraction form
    18,740.32/28,110.48 = 4,889.32/x
  3. Step 3: Cross multiply
    18,740.32x = 28,110.48 × 4,889.32
  4. Step 4: Simplify right side
    18,740.32x = 137,441,163.78
  5. Step 5: Solve for x
    x = 137,441,163.78/18,740.32
  6. Step 6: Final answer
    x = 7,333.98

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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.