Home / 12,431.79-18,645.26-4,639.05

Finding the Fourth Proportional to 12,431.79, 18,645.26 and 4,639.05

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Solution

The fourth proportional to 12,431.79, 18,645.26 and 4,639.05 is: 6,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.79 : 18,645.26 = 4,639.05 : x
  2. Step 2: Convert to fraction form
    12,431.79/18,645.26 = 4,639.05/x
  3. Step 3: Cross multiply
    12,431.79x = 18,645.26 × 4,639.05
  4. Step 4: Simplify right side
    12,431.79x = 86,496,270.21
  5. Step 5: Solve for x
    x = 86,496,270.21/12,431.79
  6. Step 6: Final answer
    x = 6,957.67

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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.