Home / 42,091.20-63,148.66-12,509.60

Finding the Fourth Proportional to 42,091.20, 63,148.66 and 12,509.60

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Solution

The fourth proportional to 42,091.20, 63,148.66 and 12,509.60 is: 18,767.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,091.20 : 63,148.66 = 12,509.60 : x
  2. Step 2: Convert to fraction form
    42,091.20/63,148.66 = 12,509.60/x
  3. Step 3: Cross multiply
    42,091.20x = 63,148.66 × 12,509.60
  4. Step 4: Simplify right side
    42,091.20x = 789,964,477.14
  5. Step 5: Solve for x
    x = 789,964,477.14/42,091.20
  6. Step 6: Final answer
    x = 18,767.92

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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.