Home / 30,620.02-42,244.76-20,015.76

Finding the Fourth Proportional to 30,620.02, 42,244.76 and 20,015.76

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Solution

The fourth proportional to 30,620.02, 42,244.76 and 20,015.76 is: 27,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.02 : 42,244.76 = 20,015.76 : x
  2. Step 2: Convert to fraction form
    30,620.02/42,244.76 = 20,015.76/x
  3. Step 3: Cross multiply
    30,620.02x = 42,244.76 × 20,015.76
  4. Step 4: Simplify right side
    30,620.02x = 845,560,977.42
  5. Step 5: Solve for x
    x = 845,560,977.42/30,620.02
  6. Step 6: Final answer
    x = 27,614.64

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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.