Home / 18,745.78-25,856.64-13,632.70

Finding the Fourth Proportional to 18,745.78, 25,856.64 and 13,632.70

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Solution

The fourth proportional to 18,745.78, 25,856.64 and 13,632.70 is: 18,804.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.78 : 25,856.64 = 13,632.70 : x
  2. Step 2: Convert to fraction form
    18,745.78/25,856.64 = 13,632.70/x
  3. Step 3: Cross multiply
    18,745.78x = 25,856.64 × 13,632.70
  4. Step 4: Simplify right side
    18,745.78x = 352,495,816.13
  5. Step 5: Solve for x
    x = 352,495,816.13/18,745.78
  6. Step 6: Final answer
    x = 18,804.01

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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.