Home / 13,809.18-19,059.14-8,143.59

Finding the Fourth Proportional to 13,809.18, 19,059.14 and 8,143.59

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Solution

The fourth proportional to 13,809.18, 19,059.14 and 8,143.59 is: 11,239.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.18 : 19,059.14 = 8,143.59 : x
  2. Step 2: Convert to fraction form
    13,809.18/19,059.14 = 8,143.59/x
  3. Step 3: Cross multiply
    13,809.18x = 19,059.14 × 8,143.59
  4. Step 4: Simplify right side
    13,809.18x = 155,209,821.91
  5. Step 5: Solve for x
    x = 155,209,821.91/13,809.18
  6. Step 6: Final answer
    x = 11,239.61

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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.