Home / 28,380.75-42,527.35-17,970.63

Finding the Fourth Proportional to 28,380.75, 42,527.35 and 17,970.63

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Solution

The fourth proportional to 28,380.75, 42,527.35 and 17,970.63 is: 26,928.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.75 : 42,527.35 = 17,970.63 : x
  2. Step 2: Convert to fraction form
    28,380.75/42,527.35 = 17,970.63/x
  3. Step 3: Cross multiply
    28,380.75x = 42,527.35 × 17,970.63
  4. Step 4: Simplify right side
    28,380.75x = 764,243,271.73
  5. Step 5: Solve for x
    x = 764,243,271.73/28,380.75
  6. Step 6: Final answer
    x = 26,928.23

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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.