Home / 18,970.96-28,433.40-13,425.94

Finding the Fourth Proportional to 18,970.96, 28,433.40 and 13,425.94

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Solution

The fourth proportional to 18,970.96, 28,433.40 and 13,425.94 is: 20,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.96 : 28,433.40 = 13,425.94 : x
  2. Step 2: Convert to fraction form
    18,970.96/28,433.40 = 13,425.94/x
  3. Step 3: Cross multiply
    18,970.96x = 28,433.40 × 13,425.94
  4. Step 4: Simplify right side
    18,970.96x = 381,745,122.40
  5. Step 5: Solve for x
    x = 381,745,122.40/18,970.96
  6. Step 6: Final answer
    x = 20,122.60

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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.