Home / 13,896.16-19,180.29-8,520.39

Finding the Fourth Proportional to 13,896.16, 19,180.29 and 8,520.39

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Solution

The fourth proportional to 13,896.16, 19,180.29 and 8,520.39 is: 11,760.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.16 : 19,180.29 = 8,520.39 : x
  2. Step 2: Convert to fraction form
    13,896.16/19,180.29 = 8,520.39/x
  3. Step 3: Cross multiply
    13,896.16x = 19,180.29 × 8,520.39
  4. Step 4: Simplify right side
    13,896.16x = 163,423,583.06
  5. Step 5: Solve for x
    x = 163,423,583.06/13,896.16
  6. Step 6: Final answer
    x = 11,760.34

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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.