Home / 13,891.80-19,179.64-12,397.16

Finding the Fourth Proportional to 13,891.80, 19,179.64 and 12,397.16

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Solution

The fourth proportional to 13,891.80, 19,179.64 and 12,397.16 is: 17,116.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.80 : 19,179.64 = 12,397.16 : x
  2. Step 2: Convert to fraction form
    13,891.80/19,179.64 = 12,397.16/x
  3. Step 3: Cross multiply
    13,891.80x = 19,179.64 × 12,397.16
  4. Step 4: Simplify right side
    13,891.80x = 237,773,065.82
  5. Step 5: Solve for x
    x = 237,773,065.82/13,891.80
  6. Step 6: Final answer
    x = 17,116.07

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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.