Home / 28,971.09-39,985.11-16,395.84

Finding the Fourth Proportional to 28,971.09, 39,985.11 and 16,395.84

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Solution

The fourth proportional to 28,971.09, 39,985.11 and 16,395.84 is: 22,629.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.09 : 39,985.11 = 16,395.84 : x
  2. Step 2: Convert to fraction form
    28,971.09/39,985.11 = 16,395.84/x
  3. Step 3: Cross multiply
    28,971.09x = 39,985.11 × 16,395.84
  4. Step 4: Simplify right side
    28,971.09x = 655,589,465.94
  5. Step 5: Solve for x
    x = 655,589,465.94/28,971.09
  6. Step 6: Final answer
    x = 22,629.09

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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.