Home / 13,972.20-19,281.18-8,306.94

Finding the Fourth Proportional to 13,972.20, 19,281.18 and 8,306.94

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Solution

The fourth proportional to 13,972.20, 19,281.18 and 8,306.94 is: 11,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.20 : 19,281.18 = 8,306.94 : x
  2. Step 2: Convert to fraction form
    13,972.20/19,281.18 = 8,306.94/x
  3. Step 3: Cross multiply
    13,972.20x = 19,281.18 × 8,306.94
  4. Step 4: Simplify right side
    13,972.20x = 160,167,605.39
  5. Step 5: Solve for x
    x = 160,167,605.39/13,972.20
  6. Step 6: Final answer
    x = 11,463.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.