Home / 13,455.30-20,134.95-8,527.30

Finding the Fourth Proportional to 13,455.30, 20,134.95 and 8,527.30

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Solution

The fourth proportional to 13,455.30, 20,134.95 and 8,527.30 is: 12,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.30 : 20,134.95 = 8,527.30 : x
  2. Step 2: Convert to fraction form
    13,455.30/20,134.95 = 8,527.30/x
  3. Step 3: Cross multiply
    13,455.30x = 20,134.95 × 8,527.30
  4. Step 4: Simplify right side
    13,455.30x = 171,696,759.14
  5. Step 5: Solve for x
    x = 171,696,759.14/13,455.30
  6. Step 6: Final answer
    x = 12,760.53

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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.