Home / 19,077.78-28,500.62-12,359.59

Finding the Fourth Proportional to 19,077.78, 28,500.62 and 12,359.59

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Solution

The fourth proportional to 19,077.78, 28,500.62 and 12,359.59 is: 18,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,077.78 : 28,500.62 = 12,359.59 : x
  2. Step 2: Convert to fraction form
    19,077.78/28,500.62 = 12,359.59/x
  3. Step 3: Cross multiply
    19,077.78x = 28,500.62 × 12,359.59
  4. Step 4: Simplify right side
    19,077.78x = 352,255,977.95
  5. Step 5: Solve for x
    x = 352,255,977.95/19,077.78
  6. Step 6: Final answer
    x = 18,464.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.