Home / 28,128.94-38,825.63-17,512.34

Finding the Fourth Proportional to 28,128.94, 38,825.63 and 17,512.34

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Solution

The fourth proportional to 28,128.94, 38,825.63 and 17,512.34 is: 24,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.94 : 38,825.63 = 17,512.34 : x
  2. Step 2: Convert to fraction form
    28,128.94/38,825.63 = 17,512.34/x
  3. Step 3: Cross multiply
    28,128.94x = 38,825.63 × 17,512.34
  4. Step 4: Simplify right side
    28,128.94x = 679,927,633.27
  5. Step 5: Solve for x
    x = 679,927,633.27/28,128.94
  6. Step 6: Final answer
    x = 24,171.82

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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.