Home / 23,128.86-31,917.12-13,057.14

Finding the Fourth Proportional to 23,128.86, 31,917.12 and 13,057.14

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Solution

The fourth proportional to 23,128.86, 31,917.12 and 13,057.14 is: 18,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.86 : 31,917.12 = 13,057.14 : x
  2. Step 2: Convert to fraction form
    23,128.86/31,917.12 = 13,057.14/x
  3. Step 3: Cross multiply
    23,128.86x = 31,917.12 × 13,057.14
  4. Step 4: Simplify right side
    23,128.86x = 416,746,304.24
  5. Step 5: Solve for x
    x = 416,746,304.24/23,128.86
  6. Step 6: Final answer
    x = 18,018.45

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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.