Home / 13,556.16-18,710.19-8,782.02

Finding the Fourth Proportional to 13,556.16, 18,710.19 and 8,782.02

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Solution

The fourth proportional to 13,556.16, 18,710.19 and 8,782.02 is: 12,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.16 : 18,710.19 = 8,782.02 : x
  2. Step 2: Convert to fraction form
    13,556.16/18,710.19 = 8,782.02/x
  3. Step 3: Cross multiply
    13,556.16x = 18,710.19 × 8,782.02
  4. Step 4: Simplify right side
    13,556.16x = 164,313,262.78
  5. Step 5: Solve for x
    x = 164,313,262.78/13,556.16
  6. Step 6: Final answer
    x = 12,120.93

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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.