Home / 18,740.28-28,110.42-4,889.16

Finding the Fourth Proportional to 18,740.28, 28,110.42 and 4,889.16

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Solution

The fourth proportional to 18,740.28, 28,110.42 and 4,889.16 is: 7,333.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.28 : 28,110.42 = 4,889.16 : x
  2. Step 2: Convert to fraction form
    18,740.28/28,110.42 = 4,889.16/x
  3. Step 3: Cross multiply
    18,740.28x = 28,110.42 × 4,889.16
  4. Step 4: Simplify right side
    18,740.28x = 137,436,341.05
  5. Step 5: Solve for x
    x = 137,436,341.05/18,740.28
  6. Step 6: Final answer
    x = 7,333.74

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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.