Home / 20,578.69-28,397.30-11,624.75

Finding the Fourth Proportional to 20,578.69, 28,397.30 and 11,624.75

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Solution

The fourth proportional to 20,578.69, 28,397.30 and 11,624.75 is: 16,041.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.69 : 28,397.30 = 11,624.75 : x
  2. Step 2: Convert to fraction form
    20,578.69/28,397.30 = 11,624.75/x
  3. Step 3: Cross multiply
    20,578.69x = 28,397.30 × 11,624.75
  4. Step 4: Simplify right side
    20,578.69x = 330,111,484.94
  5. Step 5: Solve for x
    x = 330,111,484.94/20,578.69
  6. Step 6: Final answer
    x = 16,041.42

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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.