Home / 13,830.20-19,085.12-8,166.77

Finding the Fourth Proportional to 13,830.20, 19,085.12 and 8,166.77

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Solution

The fourth proportional to 13,830.20, 19,085.12 and 8,166.77 is: 11,269.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.20 : 19,085.12 = 8,166.77 : x
  2. Step 2: Convert to fraction form
    13,830.20/19,085.12 = 8,166.77/x
  3. Step 3: Cross multiply
    13,830.20x = 19,085.12 × 8,166.77
  4. Step 4: Simplify right side
    13,830.20x = 155,863,853.59
  5. Step 5: Solve for x
    x = 155,863,853.59/13,830.20
  6. Step 6: Final answer
    x = 11,269.82

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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.