Home / 28,125.14-42,181.49-8,130.29

Finding the Fourth Proportional to 28,125.14, 42,181.49 and 8,130.29

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Solution

The fourth proportional to 28,125.14, 42,181.49 and 8,130.29 is: 12,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.14 : 42,181.49 = 8,130.29 : x
  2. Step 2: Convert to fraction form
    28,125.14/42,181.49 = 8,130.29/x
  3. Step 3: Cross multiply
    28,125.14x = 42,181.49 × 8,130.29
  4. Step 4: Simplify right side
    28,125.14x = 342,947,494.77
  5. Step 5: Solve for x
    x = 342,947,494.77/28,125.14
  6. Step 6: Final answer
    x = 12,193.63

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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.