Home / 28,191.21-42,347.84-18,325.41

Finding the Fourth Proportional to 28,191.21, 42,347.84 and 18,325.41

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Solution

The fourth proportional to 28,191.21, 42,347.84 and 18,325.41 is: 27,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.21 : 42,347.84 = 18,325.41 : x
  2. Step 2: Convert to fraction form
    28,191.21/42,347.84 = 18,325.41/x
  3. Step 3: Cross multiply
    28,191.21x = 42,347.84 × 18,325.41
  4. Step 4: Simplify right side
    28,191.21x = 776,041,438.99
  5. Step 5: Solve for x
    x = 776,041,438.99/28,191.21
  6. Step 6: Final answer
    x = 27,527.78

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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.