Home / 28,380.72-39,161.96-16,280.57

Finding the Fourth Proportional to 28,380.72, 39,161.96 and 16,280.57

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Solution

The fourth proportional to 28,380.72, 39,161.96 and 16,280.57 is: 22,465.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.72 : 39,161.96 = 16,280.57 : x
  2. Step 2: Convert to fraction form
    28,380.72/39,161.96 = 16,280.57/x
  3. Step 3: Cross multiply
    28,380.72x = 39,161.96 × 16,280.57
  4. Step 4: Simplify right side
    28,380.72x = 637,579,031.12
  5. Step 5: Solve for x
    x = 637,579,031.12/28,380.72
  6. Step 6: Final answer
    x = 22,465.22

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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.