Home / 14,220.68-19,619.70-8,630.60

Finding the Fourth Proportional to 14,220.68, 19,619.70 and 8,630.60

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Solution

The fourth proportional to 14,220.68, 19,619.70 and 8,630.60 is: 11,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.68 : 19,619.70 = 8,630.60 : x
  2. Step 2: Convert to fraction form
    14,220.68/19,619.70 = 8,630.60/x
  3. Step 3: Cross multiply
    14,220.68x = 19,619.70 × 8,630.60
  4. Step 4: Simplify right side
    14,220.68x = 169,329,782.82
  5. Step 5: Solve for x
    x = 169,329,782.82/14,220.68
  6. Step 6: Final answer
    x = 11,907.29

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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.