Home / 28,742.67-39,653.87-21,206.97

Finding the Fourth Proportional to 28,742.67, 39,653.87 and 21,206.97

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Solution

The fourth proportional to 28,742.67, 39,653.87 and 21,206.97 is: 29,257.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.67 : 39,653.87 = 21,206.97 : x
  2. Step 2: Convert to fraction form
    28,742.67/39,653.87 = 21,206.97/x
  3. Step 3: Cross multiply
    28,742.67x = 39,653.87 × 21,206.97
  4. Step 4: Simplify right side
    28,742.67x = 840,938,325.44
  5. Step 5: Solve for x
    x = 840,938,325.44/28,742.67
  6. Step 6: Final answer
    x = 29,257.49

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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.