Home / 14,723.69-20,319.59-8,438.09

Finding the Fourth Proportional to 14,723.69, 20,319.59 and 8,438.09

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Solution

The fourth proportional to 14,723.69, 20,319.59 and 8,438.09 is: 11,645.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,723.69 : 20,319.59 = 8,438.09 : x
  2. Step 2: Convert to fraction form
    14,723.69/20,319.59 = 8,438.09/x
  3. Step 3: Cross multiply
    14,723.69x = 20,319.59 × 8,438.09
  4. Step 4: Simplify right side
    14,723.69x = 171,458,448.68
  5. Step 5: Solve for x
    x = 171,458,448.68/14,723.69
  6. Step 6: Final answer
    x = 11,645.08

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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.