Home / 22,640.34-31,245.04-13,690.05

Finding the Fourth Proportional to 22,640.34, 31,245.04 and 13,690.05

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Solution

The fourth proportional to 22,640.34, 31,245.04 and 13,690.05 is: 18,893.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,640.34 : 31,245.04 = 13,690.05 : x
  2. Step 2: Convert to fraction form
    22,640.34/31,245.04 = 13,690.05/x
  3. Step 3: Cross multiply
    22,640.34x = 31,245.04 × 13,690.05
  4. Step 4: Simplify right side
    22,640.34x = 427,746,059.80
  5. Step 5: Solve for x
    x = 427,746,059.80/22,640.34
  6. Step 6: Final answer
    x = 18,893.09

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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.