Home / 28,516.15-42,759.78-13,518.73

Finding the Fourth Proportional to 28,516.15, 42,759.78 and 13,518.73

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Solution

The fourth proportional to 28,516.15, 42,759.78 and 13,518.73 is: 20,271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.15 : 42,759.78 = 13,518.73 : x
  2. Step 2: Convert to fraction form
    28,516.15/42,759.78 = 13,518.73/x
  3. Step 3: Cross multiply
    28,516.15x = 42,759.78 × 13,518.73
  4. Step 4: Simplify right side
    28,516.15x = 578,057,920.68
  5. Step 5: Solve for x
    x = 578,057,920.68/28,516.15
  6. Step 6: Final answer
    x = 20,271.25

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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.