Home / 21,653.60-29,887.62-14,118.62

Finding the Fourth Proportional to 21,653.60, 29,887.62 and 14,118.62

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Solution

The fourth proportional to 21,653.60, 29,887.62 and 14,118.62 is: 19,487.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.60 : 29,887.62 = 14,118.62 : x
  2. Step 2: Convert to fraction form
    21,653.60/29,887.62 = 14,118.62/x
  3. Step 3: Cross multiply
    21,653.60x = 29,887.62 × 14,118.62
  4. Step 4: Simplify right side
    21,653.60x = 421,971,949.48
  5. Step 5: Solve for x
    x = 421,971,949.48/21,653.60
  6. Step 6: Final answer
    x = 19,487.38

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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.