Home / 13,977.16-20,888.75-13,168

Finding the Fourth Proportional to 13,977.16, 20,888.75 and 13,168

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Solution

The fourth proportional to 13,977.16, 20,888.75 and 13,168 is: 19,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.16 : 20,888.75 = 13,168 : x
  2. Step 2: Convert to fraction form
    13,977.16/20,888.75 = 13,168/x
  3. Step 3: Cross multiply
    13,977.16x = 20,888.75 × 13,168
  4. Step 4: Simplify right side
    13,977.16x = 275,063,060
  5. Step 5: Solve for x
    x = 275,063,060/13,977.16
  6. Step 6: Final answer
    x = 19,679.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.