Home / 13,788.12-19,032.52-8,123.80

Finding the Fourth Proportional to 13,788.12, 19,032.52 and 8,123.80

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Solution

The fourth proportional to 13,788.12, 19,032.52 and 8,123.80 is: 11,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.12 : 19,032.52 = 8,123.80 : x
  2. Step 2: Convert to fraction form
    13,788.12/19,032.52 = 8,123.80/x
  3. Step 3: Cross multiply
    13,788.12x = 19,032.52 × 8,123.80
  4. Step 4: Simplify right side
    13,788.12x = 154,616,385.98
  5. Step 5: Solve for x
    x = 154,616,385.98/13,788.12
  6. Step 6: Final answer
    x = 11,213.74

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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.