Home / 12,477.24-18,720.32-5,358.49

Finding the Fourth Proportional to 12,477.24, 18,720.32 and 5,358.49

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Solution

The fourth proportional to 12,477.24, 18,720.32 and 5,358.49 is: 8,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.24 : 18,720.32 = 5,358.49 : x
  2. Step 2: Convert to fraction form
    12,477.24/18,720.32 = 5,358.49/x
  3. Step 3: Cross multiply
    12,477.24x = 18,720.32 × 5,358.49
  4. Step 4: Simplify right side
    12,477.24x = 100,312,573.92
  5. Step 5: Solve for x
    x = 100,312,573.92/12,477.24
  6. Step 6: Final answer
    x = 8,039.64

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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.