Home / 30,997.92-42,718.14-22,485.36

Finding the Fourth Proportional to 30,997.92, 42,718.14 and 22,485.36

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Solution

The fourth proportional to 30,997.92, 42,718.14 and 22,485.36 is: 30,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,997.92 : 42,718.14 = 22,485.36 : x
  2. Step 2: Convert to fraction form
    30,997.92/42,718.14 = 22,485.36/x
  3. Step 3: Cross multiply
    30,997.92x = 42,718.14 × 22,485.36
  4. Step 4: Simplify right side
    30,997.92x = 960,532,756.43
  5. Step 5: Solve for x
    x = 960,532,756.43/30,997.92
  6. Step 6: Final answer
    x = 30,987.01

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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.