Home / 30,944.06-42,680.74-28,400.03

Finding the Fourth Proportional to 30,944.06, 42,680.74 and 28,400.03

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Solution

The fourth proportional to 30,944.06, 42,680.74 and 28,400.03 is: 39,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,944.06 : 42,680.74 = 28,400.03 : x
  2. Step 2: Convert to fraction form
    30,944.06/42,680.74 = 28,400.03/x
  3. Step 3: Cross multiply
    30,944.06x = 42,680.74 × 28,400.03
  4. Step 4: Simplify right side
    30,944.06x = 1,212,133,941.02
  5. Step 5: Solve for x
    x = 1,212,133,941.02/30,944.06
  6. Step 6: Final answer
    x = 39,171.79

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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.