Home / 13,228.79-18,256.13-7,260.85

Finding the Fourth Proportional to 13,228.79, 18,256.13 and 7,260.85

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Solution

The fourth proportional to 13,228.79, 18,256.13 and 7,260.85 is: 10,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.79 : 18,256.13 = 7,260.85 : x
  2. Step 2: Convert to fraction form
    13,228.79/18,256.13 = 7,260.85/x
  3. Step 3: Cross multiply
    13,228.79x = 18,256.13 × 7,260.85
  4. Step 4: Simplify right side
    13,228.79x = 132,555,021.51
  5. Step 5: Solve for x
    x = 132,555,021.51/13,228.79
  6. Step 6: Final answer
    x = 10,020.19

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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.