Home / 13,678.98-18,876.99-7,391.36

Finding the Fourth Proportional to 13,678.98, 18,876.99 and 7,391.36

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Solution

The fourth proportional to 13,678.98, 18,876.99 and 7,391.36 is: 10,200.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.98 : 18,876.99 = 7,391.36 : x
  2. Step 2: Convert to fraction form
    13,678.98/18,876.99 = 7,391.36/x
  3. Step 3: Cross multiply
    13,678.98x = 18,876.99 × 7,391.36
  4. Step 4: Simplify right side
    13,678.98x = 139,526,534.42
  5. Step 5: Solve for x
    x = 139,526,534.42/13,678.98
  6. Step 6: Final answer
    x = 10,200.07

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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.