Home / 13,888.31-19,174.80-12,393.65

Finding the Fourth Proportional to 13,888.31, 19,174.80 and 12,393.65

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Solution

The fourth proportional to 13,888.31, 19,174.80 and 12,393.65 is: 17,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.31 : 19,174.80 = 12,393.65 : x
  2. Step 2: Convert to fraction form
    13,888.31/19,174.80 = 12,393.65/x
  3. Step 3: Cross multiply
    13,888.31x = 19,174.80 × 12,393.65
  4. Step 4: Simplify right side
    13,888.31x = 237,645,664.15
  5. Step 5: Solve for x
    x = 237,645,664.15/13,888.31
  6. Step 6: Final answer
    x = 17,111.21

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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.