Home / 13,918.65-20,953.86-12,693.93

Finding the Fourth Proportional to 13,918.65, 20,953.86 and 12,693.93

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Solution

The fourth proportional to 13,918.65, 20,953.86 and 12,693.93 is: 19,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.65 : 20,953.86 = 12,693.93 : x
  2. Step 2: Convert to fraction form
    13,918.65/20,953.86 = 12,693.93/x
  3. Step 3: Cross multiply
    13,918.65x = 20,953.86 × 12,693.93
  4. Step 4: Simplify right side
    13,918.65x = 265,986,832.07
  5. Step 5: Solve for x
    x = 265,986,832.07/13,918.65
  6. Step 6: Final answer
    x = 19,110.10

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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.