Home / 12,867.78-19,292.18-8,697.45

Finding the Fourth Proportional to 12,867.78, 19,292.18 and 8,697.45

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Solution

The fourth proportional to 12,867.78, 19,292.18 and 8,697.45 is: 13,039.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.78 : 19,292.18 = 8,697.45 : x
  2. Step 2: Convert to fraction form
    12,867.78/19,292.18 = 8,697.45/x
  3. Step 3: Cross multiply
    12,867.78x = 19,292.18 × 8,697.45
  4. Step 4: Simplify right side
    12,867.78x = 167,792,727.45
  5. Step 5: Solve for x
    x = 167,792,727.45/12,867.78
  6. Step 6: Final answer
    x = 13,039.76

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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.