Home / 30,560,903.73-42,170,219.35-20,659,330.34

Finding the Fourth Proportional to 30,560,903.73, 42,170,219.35 and 20,659,330.34

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Solution

The fourth proportional to 30,560,903.73, 42,170,219.35 and 20,659,330.34 is: 28,507,288.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,560,903.73 : 42,170,219.35 = 20,659,330.34 : x
  2. Step 2: Convert to fraction form
    30,560,903.73/42,170,219.35 = 20,659,330.34/x
  3. Step 3: Cross multiply
    30,560,903.73x = 42,170,219.35 × 20,659,330.34
  4. Step 4: Simplify right side
    30,560,903.73x = 871,208,491,984,242.75
  5. Step 5: Solve for x
    x = 871,208,491,984,242.75/30,560,903.73
  6. Step 6: Final answer
    x = 28,507,288.25

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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.