Home / 28,258.47-38,997.16-15,512.85

Finding the Fourth Proportional to 28,258.47, 38,997.16 and 15,512.85

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Solution

The fourth proportional to 28,258.47, 38,997.16 and 15,512.85 is: 21,407.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.47 : 38,997.16 = 15,512.85 : x
  2. Step 2: Convert to fraction form
    28,258.47/38,997.16 = 15,512.85/x
  3. Step 3: Cross multiply
    28,258.47x = 38,997.16 × 15,512.85
  4. Step 4: Simplify right side
    28,258.47x = 604,957,093.51
  5. Step 5: Solve for x
    x = 604,957,093.51/28,258.47
  6. Step 6: Final answer
    x = 21,407.99

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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.