Home / 23,128.56-31,917.36-12,518.16

Finding the Fourth Proportional to 23,128.56, 31,917.36 and 12,518.16

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Solution

The fourth proportional to 23,128.56, 31,917.36 and 12,518.16 is: 17,275.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.56 : 31,917.36 = 12,518.16 : x
  2. Step 2: Convert to fraction form
    23,128.56/31,917.36 = 12,518.16/x
  3. Step 3: Cross multiply
    23,128.56x = 31,917.36 × 12,518.16
  4. Step 4: Simplify right side
    23,128.56x = 399,546,619.26
  5. Step 5: Solve for x
    x = 399,546,619.26/23,128.56
  6. Step 6: Final answer
    x = 17,275.03

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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.