Home / 13,335.10-18,396.68-7,668.54

Finding the Fourth Proportional to 13,335.10, 18,396.68 and 7,668.54

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Solution

The fourth proportional to 13,335.10, 18,396.68 and 7,668.54 is: 10,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.10 : 18,396.68 = 7,668.54 : x
  2. Step 2: Convert to fraction form
    13,335.10/18,396.68 = 7,668.54/x
  3. Step 3: Cross multiply
    13,335.10x = 18,396.68 × 7,668.54
  4. Step 4: Simplify right side
    13,335.10x = 141,075,638.10
  5. Step 5: Solve for x
    x = 141,075,638.10/13,335.10
  6. Step 6: Final answer
    x = 10,579.27

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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.