Home / 30,727.15-42,406.64-18,798.41

Finding the Fourth Proportional to 30,727.15, 42,406.64 and 18,798.41

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Solution

The fourth proportional to 30,727.15, 42,406.64 and 18,798.41 is: 25,943.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,727.15 : 42,406.64 = 18,798.41 : x
  2. Step 2: Convert to fraction form
    30,727.15/42,406.64 = 18,798.41/x
  3. Step 3: Cross multiply
    30,727.15x = 42,406.64 × 18,798.41
  4. Step 4: Simplify right side
    30,727.15x = 797,177,487.96
  5. Step 5: Solve for x
    x = 797,177,487.96/30,727.15
  6. Step 6: Final answer
    x = 25,943.75

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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.