Home / 12,942.79-19,423.83-9,618.70

Finding the Fourth Proportional to 12,942.79, 19,423.83 and 9,618.70

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Solution

The fourth proportional to 12,942.79, 19,423.83 and 9,618.70 is: 14,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.79 : 19,423.83 = 9,618.70 : x
  2. Step 2: Convert to fraction form
    12,942.79/19,423.83 = 9,618.70/x
  3. Step 3: Cross multiply
    12,942.79x = 19,423.83 × 9,618.70
  4. Step 4: Simplify right side
    12,942.79x = 186,831,993.62
  5. Step 5: Solve for x
    x = 186,831,993.62/12,942.79
  6. Step 6: Final answer
    x = 14,435.22

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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.