Home / 20,573.12-30,872.00-18,900.07

Finding the Fourth Proportional to 20,573.12, 30,872.00 and 18,900.07

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Solution

The fourth proportional to 20,573.12, 30,872.00 and 18,900.07 is: 28,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.12 : 30,872.00 = 18,900.07 : x
  2. Step 2: Convert to fraction form
    20,573.12/30,872.00 = 18,900.07/x
  3. Step 3: Cross multiply
    20,573.12x = 30,872.00 × 18,900.07
  4. Step 4: Simplify right side
    20,573.12x = 583,482,931.11
  5. Step 5: Solve for x
    x = 583,482,931.11/20,573.12
  6. Step 6: Final answer
    x = 28,361.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.