Home / 28,442.85-42,663.87-12,860.48

Finding the Fourth Proportional to 28,442.85, 42,663.87 and 12,860.48

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Solution

The fourth proportional to 28,442.85, 42,663.87 and 12,860.48 is: 19,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.85 : 42,663.87 = 12,860.48 : x
  2. Step 2: Convert to fraction form
    28,442.85/42,663.87 = 12,860.48/x
  3. Step 3: Cross multiply
    28,442.85x = 42,663.87 × 12,860.48
  4. Step 4: Simplify right side
    28,442.85x = 548,677,633.54
  5. Step 5: Solve for x
    x = 548,677,633.54/28,442.85
  6. Step 6: Final answer
    x = 19,290.53

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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.