Home / 28,161.27-42,256.49-12,377.39

Finding the Fourth Proportional to 28,161.27, 42,256.49 and 12,377.39

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Solution

The fourth proportional to 28,161.27, 42,256.49 and 12,377.39 is: 18,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.27 : 42,256.49 = 12,377.39 : x
  2. Step 2: Convert to fraction form
    28,161.27/42,256.49 = 12,377.39/x
  3. Step 3: Cross multiply
    28,161.27x = 42,256.49 × 12,377.39
  4. Step 4: Simplify right side
    28,161.27x = 523,025,199.55
  5. Step 5: Solve for x
    x = 523,025,199.55/28,161.27
  6. Step 6: Final answer
    x = 18,572.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.