Home / 30,896.64-42,657.84-18,325.44

Finding the Fourth Proportional to 30,896.64, 42,657.84 and 18,325.44

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Solution

The fourth proportional to 30,896.64, 42,657.84 and 18,325.44 is: 25,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,896.64 : 42,657.84 = 18,325.44 : x
  2. Step 2: Convert to fraction form
    30,896.64/42,657.84 = 18,325.44/x
  3. Step 3: Cross multiply
    30,896.64x = 42,657.84 × 18,325.44
  4. Step 4: Simplify right side
    30,896.64x = 781,723,687.45
  5. Step 5: Solve for x
    x = 781,723,687.45/30,896.64
  6. Step 6: Final answer
    x = 25,301.25

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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.