Home / 28,258.92-38,999.34-15,683.58

Finding the Fourth Proportional to 28,258.92, 38,999.34 and 15,683.58

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Solution

The fourth proportional to 28,258.92, 38,999.34 and 15,683.58 is: 21,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.92 : 38,999.34 = 15,683.58 : x
  2. Step 2: Convert to fraction form
    28,258.92/38,999.34 = 15,683.58/x
  3. Step 3: Cross multiply
    28,258.92x = 38,999.34 × 15,683.58
  4. Step 4: Simplify right side
    28,258.92x = 611,649,268.84
  5. Step 5: Solve for x
    x = 611,649,268.84/28,258.92
  6. Step 6: Final answer
    x = 21,644.47

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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.