Home / 28,005.37-38,647.19-15,258.51

Finding the Fourth Proportional to 28,005.37, 38,647.19 and 15,258.51

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Solution

The fourth proportional to 28,005.37, 38,647.19 and 15,258.51 is: 21,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.37 : 38,647.19 = 15,258.51 : x
  2. Step 2: Convert to fraction form
    28,005.37/38,647.19 = 15,258.51/x
  3. Step 3: Cross multiply
    28,005.37x = 38,647.19 × 15,258.51
  4. Step 4: Simplify right side
    28,005.37x = 589,698,573.23
  5. Step 5: Solve for x
    x = 589,698,573.23/28,005.37
  6. Step 6: Final answer
    x = 21,056.63

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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.