Home / 28,975.90-39,986.23-16,228.96

Finding the Fourth Proportional to 28,975.90, 39,986.23 and 16,228.96

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Solution

The fourth proportional to 28,975.90, 39,986.23 and 16,228.96 is: 22,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.90 : 39,986.23 = 16,228.96 : x
  2. Step 2: Convert to fraction form
    28,975.90/39,986.23 = 16,228.96/x
  3. Step 3: Cross multiply
    28,975.90x = 39,986.23 × 16,228.96
  4. Step 4: Simplify right side
    28,975.90x = 648,934,927.22
  5. Step 5: Solve for x
    x = 648,934,927.22/28,975.90
  6. Step 6: Final answer
    x = 22,395.68

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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.