Home / 13,630.49-18,809.60-7,580.70

Finding the Fourth Proportional to 13,630.49, 18,809.60 and 7,580.70

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Solution

The fourth proportional to 13,630.49, 18,809.60 and 7,580.70 is: 10,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.49 : 18,809.60 = 7,580.70 : x
  2. Step 2: Convert to fraction form
    13,630.49/18,809.60 = 7,580.70/x
  3. Step 3: Cross multiply
    13,630.49x = 18,809.60 × 7,580.70
  4. Step 4: Simplify right side
    13,630.49x = 142,589,896.82
  5. Step 5: Solve for x
    x = 142,589,896.82/13,630.49
  6. Step 6: Final answer
    x = 10,461.10

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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.