Home / 12,429.09-18,643.79-4,430.22

Finding the Fourth Proportional to 12,429.09, 18,643.79 and 4,430.22

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Solution

The fourth proportional to 12,429.09, 18,643.79 and 4,430.22 is: 6,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.09 : 18,643.79 = 4,430.22 : x
  2. Step 2: Convert to fraction form
    12,429.09/18,643.79 = 4,430.22/x
  3. Step 3: Cross multiply
    12,429.09x = 18,643.79 × 4,430.22
  4. Step 4: Simplify right side
    12,429.09x = 82,596,091.33
  5. Step 5: Solve for x
    x = 82,596,091.33/12,429.09
  6. Step 6: Final answer
    x = 6,645.39

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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.