Home / 18,688.62-25,765.54-15,099.56

Finding the Fourth Proportional to 18,688.62, 25,765.54 and 15,099.56

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Solution

The fourth proportional to 18,688.62, 25,765.54 and 15,099.56 is: 20,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.62 : 25,765.54 = 15,099.56 : x
  2. Step 2: Convert to fraction form
    18,688.62/25,765.54 = 15,099.56/x
  3. Step 3: Cross multiply
    18,688.62x = 25,765.54 × 15,099.56
  4. Step 4: Simplify right side
    18,688.62x = 389,048,477.07
  5. Step 5: Solve for x
    x = 389,048,477.07/18,688.62
  6. Step 6: Final answer
    x = 20,817.40

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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.