Home / 13,345.23-18,418.26-7,679.89

Finding the Fourth Proportional to 13,345.23, 18,418.26 and 7,679.89

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Solution

The fourth proportional to 13,345.23, 18,418.26 and 7,679.89 is: 10,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.23 : 18,418.26 = 7,679.89 : x
  2. Step 2: Convert to fraction form
    13,345.23/18,418.26 = 7,679.89/x
  3. Step 3: Cross multiply
    13,345.23x = 18,418.26 × 7,679.89
  4. Step 4: Simplify right side
    13,345.23x = 141,450,189.21
  5. Step 5: Solve for x
    x = 141,450,189.21/13,345.23
  6. Step 6: Final answer
    x = 10,599.31

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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.