Home / 28,971.59-39,985.80-16,396.34

Finding the Fourth Proportional to 28,971.59, 39,985.80 and 16,396.34

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Solution

The fourth proportional to 28,971.59, 39,985.80 and 16,396.34 is: 22,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.59 : 39,985.80 = 16,396.34 : x
  2. Step 2: Convert to fraction form
    28,971.59/39,985.80 = 16,396.34/x
  3. Step 3: Cross multiply
    28,971.59x = 39,985.80 × 16,396.34
  4. Step 4: Simplify right side
    28,971.59x = 655,620,771.97
  5. Step 5: Solve for x
    x = 655,620,771.97/28,971.59
  6. Step 6: Final answer
    x = 22,629.78

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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.