Home / 28,005.05-38,647.42-15,258.84

Finding the Fourth Proportional to 28,005.05, 38,647.42 and 15,258.84

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Solution

The fourth proportional to 28,005.05, 38,647.42 and 15,258.84 is: 21,057.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.05 : 38,647.42 = 15,258.84 : x
  2. Step 2: Convert to fraction form
    28,005.05/38,647.42 = 15,258.84/x
  3. Step 3: Cross multiply
    28,005.05x = 38,647.42 × 15,258.84
  4. Step 4: Simplify right side
    28,005.05x = 589,714,615.12
  5. Step 5: Solve for x
    x = 589,714,615.12/28,005.05
  6. Step 6: Final answer
    x = 21,057.44

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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.