Home / 30,987.60-42,745.08-19,042.44

Finding the Fourth Proportional to 30,987.60, 42,745.08 and 19,042.44

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Solution

The fourth proportional to 30,987.60, 42,745.08 and 19,042.44 is: 26,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.60 : 42,745.08 = 19,042.44 : x
  2. Step 2: Convert to fraction form
    30,987.60/42,745.08 = 19,042.44/x
  3. Step 3: Cross multiply
    30,987.60x = 42,745.08 × 19,042.44
  4. Step 4: Simplify right side
    30,987.60x = 813,970,621.20
  5. Step 5: Solve for x
    x = 813,970,621.20/30,987.60
  6. Step 6: Final answer
    x = 26,267.62

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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.