Home / 28,032.80-38,693.20-19,651.36

Finding the Fourth Proportional to 28,032.80, 38,693.20 and 19,651.36

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Solution

The fourth proportional to 28,032.80, 38,693.20 and 19,651.36 is: 27,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,032.80 : 38,693.20 = 19,651.36 : x
  2. Step 2: Convert to fraction form
    28,032.80/38,693.20 = 19,651.36/x
  3. Step 3: Cross multiply
    28,032.80x = 38,693.20 × 19,651.36
  4. Step 4: Simplify right side
    28,032.80x = 760,374,002.75
  5. Step 5: Solve for x
    x = 760,374,002.75/28,032.80
  6. Step 6: Final answer
    x = 27,124.44

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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.