Home / 12,457.08-18,689.07-5,435.79

Finding the Fourth Proportional to 12,457.08, 18,689.07 and 5,435.79

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Solution

The fourth proportional to 12,457.08, 18,689.07 and 5,435.79 is: 8,155.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.08 : 18,689.07 = 5,435.79 : x
  2. Step 2: Convert to fraction form
    12,457.08/18,689.07 = 5,435.79/x
  3. Step 3: Cross multiply
    12,457.08x = 18,689.07 × 5,435.79
  4. Step 4: Simplify right side
    12,457.08x = 101,589,859.82
  5. Step 5: Solve for x
    x = 101,589,859.82/12,457.08
  6. Step 6: Final answer
    x = 8,155.19

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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.