Home / 28,259.31-38,997.89-15,512.57

Finding the Fourth Proportional to 28,259.31, 38,997.89 and 15,512.57

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Solution

The fourth proportional to 28,259.31, 38,997.89 and 15,512.57 is: 21,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.31 : 38,997.89 = 15,512.57 : x
  2. Step 2: Convert to fraction form
    28,259.31/38,997.89 = 15,512.57/x
  3. Step 3: Cross multiply
    28,259.31x = 38,997.89 × 15,512.57
  4. Step 4: Simplify right side
    28,259.31x = 604,957,225.93
  5. Step 5: Solve for x
    x = 604,957,225.93/28,259.31
  6. Step 6: Final answer
    x = 21,407.36

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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.