Home / 28,091.54-38,765.31-15,516.02

Finding the Fourth Proportional to 28,091.54, 38,765.31 and 15,516.02

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Solution

The fourth proportional to 28,091.54, 38,765.31 and 15,516.02 is: 21,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.54 : 38,765.31 = 15,516.02 : x
  2. Step 2: Convert to fraction form
    28,091.54/38,765.31 = 15,516.02/x
  3. Step 3: Cross multiply
    28,091.54x = 38,765.31 × 15,516.02
  4. Step 4: Simplify right side
    28,091.54x = 601,483,325.27
  5. Step 5: Solve for x
    x = 601,483,325.27/28,091.54
  6. Step 6: Final answer
    x = 21,411.55

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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.