Home / 18,900.06-28,317.69-13,343.46

Finding the Fourth Proportional to 18,900.06, 28,317.69 and 13,343.46

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Solution

The fourth proportional to 18,900.06, 28,317.69 and 13,343.46 is: 19,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.06 : 28,317.69 = 13,343.46 : x
  2. Step 2: Convert to fraction form
    18,900.06/28,317.69 = 13,343.46/x
  3. Step 3: Cross multiply
    18,900.06x = 28,317.69 × 13,343.46
  4. Step 4: Simplify right side
    18,900.06x = 377,855,963.81
  5. Step 5: Solve for x
    x = 377,855,963.81/18,900.06
  6. Step 6: Final answer
    x = 19,992.32

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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.