Home / 13,986.65-21,056.54-12,761.93

Finding the Fourth Proportional to 13,986.65, 21,056.54 and 12,761.93

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Solution

The fourth proportional to 13,986.65, 21,056.54 and 12,761.93 is: 19,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.65 : 21,056.54 = 12,761.93 : x
  2. Step 2: Convert to fraction form
    13,986.65/21,056.54 = 12,761.93/x
  3. Step 3: Cross multiply
    13,986.65x = 21,056.54 × 12,761.93
  4. Step 4: Simplify right side
    13,986.65x = 268,722,089.52
  5. Step 5: Solve for x
    x = 268,722,089.52/13,986.65
  6. Step 6: Final answer
    x = 19,212.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.