Home / 21,569.74-29,771.79-16,788.58

Finding the Fourth Proportional to 21,569.74, 29,771.79 and 16,788.58

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Solution

The fourth proportional to 21,569.74, 29,771.79 and 16,788.58 is: 23,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.74 : 29,771.79 = 16,788.58 : x
  2. Step 2: Convert to fraction form
    21,569.74/29,771.79 = 16,788.58/x
  3. Step 3: Cross multiply
    21,569.74x = 29,771.79 × 16,788.58
  4. Step 4: Simplify right side
    21,569.74x = 499,825,994.22
  5. Step 5: Solve for x
    x = 499,825,994.22/21,569.74
  6. Step 6: Final answer
    x = 23,172.56

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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.