Home / 13,886.80-19,172.73-12,392.15

Finding the Fourth Proportional to 13,886.80, 19,172.73 and 12,392.15

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Solution

The fourth proportional to 13,886.80, 19,172.73 and 12,392.15 is: 17,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.80 : 19,172.73 = 12,392.15 : x
  2. Step 2: Convert to fraction form
    13,886.80/19,172.73 = 12,392.15/x
  3. Step 3: Cross multiply
    13,886.80x = 19,172.73 × 12,392.15
  4. Step 4: Simplify right side
    13,886.80x = 237,591,322.10
  5. Step 5: Solve for x
    x = 237,591,322.10/13,886.80
  6. Step 6: Final answer
    x = 17,109.15

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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.