Home / 30,959.28-42,724.44-18,855.60

Finding the Fourth Proportional to 30,959.28, 42,724.44 and 18,855.60

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Solution

The fourth proportional to 30,959.28, 42,724.44 and 18,855.60 is: 26,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,959.28 : 42,724.44 = 18,855.60 : x
  2. Step 2: Convert to fraction form
    30,959.28/42,724.44 = 18,855.60/x
  3. Step 3: Cross multiply
    30,959.28x = 42,724.44 × 18,855.60
  4. Step 4: Simplify right side
    30,959.28x = 805,594,950.86
  5. Step 5: Solve for x
    x = 805,594,950.86/30,959.28
  6. Step 6: Final answer
    x = 26,021.11

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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.