Home / 13,972.10-19,280.34-8,228.66

Finding the Fourth Proportional to 13,972.10, 19,280.34 and 8,228.66

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Solution

The fourth proportional to 13,972.10, 19,280.34 and 8,228.66 is: 11,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.10 : 19,280.34 = 8,228.66 : x
  2. Step 2: Convert to fraction form
    13,972.10/19,280.34 = 8,228.66/x
  3. Step 3: Cross multiply
    13,972.10x = 19,280.34 × 8,228.66
  4. Step 4: Simplify right side
    13,972.10x = 158,651,266.14
  5. Step 5: Solve for x
    x = 158,651,266.14/13,972.10
  6. Step 6: Final answer
    x = 11,354.87

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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.