Home / 18,512.44-25,547.81-10,128.94

Finding the Fourth Proportional to 18,512.44, 25,547.81 and 10,128.94

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Solution

The fourth proportional to 18,512.44, 25,547.81 and 10,128.94 is: 13,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.44 : 25,547.81 = 10,128.94 : x
  2. Step 2: Convert to fraction form
    18,512.44/25,547.81 = 10,128.94/x
  3. Step 3: Cross multiply
    18,512.44x = 25,547.81 × 10,128.94
  4. Step 4: Simplify right side
    18,512.44x = 258,772,120.11
  5. Step 5: Solve for x
    x = 258,772,120.11/18,512.44
  6. Step 6: Final answer
    x = 13,978.28

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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.