Home / 30,933.08-42,722.63-20,844.01

Finding the Fourth Proportional to 30,933.08, 42,722.63 and 20,844.01

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Solution

The fourth proportional to 30,933.08, 42,722.63 and 20,844.01 is: 28,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.08 : 42,722.63 = 20,844.01 : x
  2. Step 2: Convert to fraction form
    30,933.08/42,722.63 = 20,844.01/x
  3. Step 3: Cross multiply
    30,933.08x = 42,722.63 × 20,844.01
  4. Step 4: Simplify right side
    30,933.08x = 890,510,926.95
  5. Step 5: Solve for x
    x = 890,510,926.95/30,933.08
  6. Step 6: Final answer
    x = 28,788.30

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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.