Home / 30,442.37-42,015.36-19,113.48

Finding the Fourth Proportional to 30,442.37, 42,015.36 and 19,113.48

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Solution

The fourth proportional to 30,442.37, 42,015.36 and 19,113.48 is: 26,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,442.37 : 42,015.36 = 19,113.48 : x
  2. Step 2: Convert to fraction form
    30,442.37/42,015.36 = 19,113.48/x
  3. Step 3: Cross multiply
    30,442.37x = 42,015.36 × 19,113.48
  4. Step 4: Simplify right side
    30,442.37x = 803,059,743.05
  5. Step 5: Solve for x
    x = 803,059,743.05/30,442.37
  6. Step 6: Final answer
    x = 26,379.68

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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.