Home / 30,375.51-45,541.40-18,664.53

Finding the Fourth Proportional to 30,375.51, 45,541.40 and 18,664.53

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Solution

The fourth proportional to 30,375.51, 45,541.40 and 18,664.53 is: 27,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,375.51 : 45,541.40 = 18,664.53 : x
  2. Step 2: Convert to fraction form
    30,375.51/45,541.40 = 18,664.53/x
  3. Step 3: Cross multiply
    30,375.51x = 45,541.40 × 18,664.53
  4. Step 4: Simplify right side
    30,375.51x = 850,008,733.22
  5. Step 5: Solve for x
    x = 850,008,733.22/30,375.51
  6. Step 6: Final answer
    x = 27,983.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.