Home / 28,902.09-39,903.92-19,354.21

Finding the Fourth Proportional to 28,902.09, 39,903.92 and 19,354.21

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Solution

The fourth proportional to 28,902.09, 39,903.92 and 19,354.21 is: 26,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.09 : 39,903.92 = 19,354.21 : x
  2. Step 2: Convert to fraction form
    28,902.09/39,903.92 = 19,354.21/x
  3. Step 3: Cross multiply
    28,902.09x = 39,903.92 × 19,354.21
  4. Step 4: Simplify right side
    28,902.09x = 772,308,847.50
  5. Step 5: Solve for x
    x = 772,308,847.50/28,902.09
  6. Step 6: Final answer
    x = 26,721.56

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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.