Home / 28,258.89-38,996.51-15,512.06

Finding the Fourth Proportional to 28,258.89, 38,996.51 and 15,512.06

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Solution

The fourth proportional to 28,258.89, 38,996.51 and 15,512.06 is: 21,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.89 : 38,996.51 = 15,512.06 : x
  2. Step 2: Convert to fraction form
    28,258.89/38,996.51 = 15,512.06/x
  3. Step 3: Cross multiply
    28,258.89x = 38,996.51 × 15,512.06
  4. Step 4: Simplify right side
    28,258.89x = 604,915,930.37
  5. Step 5: Solve for x
    x = 604,915,930.37/28,258.89
  6. Step 6: Final answer
    x = 21,406.22

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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.