Home / 38,640.15-57,953.25-13,680.45

Finding the Fourth Proportional to 38,640.15, 57,953.25 and 13,680.45

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Solution

The fourth proportional to 38,640.15, 57,953.25 and 13,680.45 is: 20,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.15 : 57,953.25 = 13,680.45 : x
  2. Step 2: Convert to fraction form
    38,640.15/57,953.25 = 13,680.45/x
  3. Step 3: Cross multiply
    38,640.15x = 57,953.25 × 13,680.45
  4. Step 4: Simplify right side
    38,640.15x = 792,826,538.96
  5. Step 5: Solve for x
    x = 792,826,538.96/38,640.15
  6. Step 6: Final answer
    x = 20,518.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.