Home / 30,612.09-42,243.60-18,695.37

Finding the Fourth Proportional to 30,612.09, 42,243.60 and 18,695.37

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Solution

The fourth proportional to 30,612.09, 42,243.60 and 18,695.37 is: 25,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.09 : 42,243.60 = 18,695.37 : x
  2. Step 2: Convert to fraction form
    30,612.09/42,243.60 = 18,695.37/x
  3. Step 3: Cross multiply
    30,612.09x = 42,243.60 × 18,695.37
  4. Step 4: Simplify right side
    30,612.09x = 789,759,732.13
  5. Step 5: Solve for x
    x = 789,759,732.13/30,612.09
  6. Step 6: Final answer
    x = 25,798.95

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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.