Home / 22,378.94-30,880.53-12,945.74

Finding the Fourth Proportional to 22,378.94, 30,880.53 and 12,945.74

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Solution

The fourth proportional to 22,378.94, 30,880.53 and 12,945.74 is: 17,863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.94 : 30,880.53 = 12,945.74 : x
  2. Step 2: Convert to fraction form
    22,378.94/30,880.53 = 12,945.74/x
  3. Step 3: Cross multiply
    22,378.94x = 30,880.53 × 12,945.74
  4. Step 4: Simplify right side
    22,378.94x = 399,771,158.04
  5. Step 5: Solve for x
    x = 399,771,158.04/22,378.94
  6. Step 6: Final answer
    x = 17,863.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.