Home / 28,683.73-39,561.64-20,752.21

Finding the Fourth Proportional to 28,683.73, 39,561.64 and 20,752.21

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Solution

The fourth proportional to 28,683.73, 39,561.64 and 20,752.21 is: 28,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,683.73 : 39,561.64 = 20,752.21 : x
  2. Step 2: Convert to fraction form
    28,683.73/39,561.64 = 20,752.21/x
  3. Step 3: Cross multiply
    28,683.73x = 39,561.64 × 20,752.21
  4. Step 4: Simplify right side
    28,683.73x = 820,991,461.22
  5. Step 5: Solve for x
    x = 820,991,461.22/28,683.73
  6. Step 6: Final answer
    x = 28,622.20

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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.