Home / 30,663.54-42,319.60-18,724.37

Finding the Fourth Proportional to 30,663.54, 42,319.60 and 18,724.37

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Solution

The fourth proportional to 30,663.54, 42,319.60 and 18,724.37 is: 25,842.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.54 : 42,319.60 = 18,724.37 : x
  2. Step 2: Convert to fraction form
    30,663.54/42,319.60 = 18,724.37/x
  3. Step 3: Cross multiply
    30,663.54x = 42,319.60 × 18,724.37
  4. Step 4: Simplify right side
    30,663.54x = 792,407,590.24
  5. Step 5: Solve for x
    x = 792,407,590.24/30,663.54
  6. Step 6: Final answer
    x = 25,842.01

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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.