Home / 13,857.33-20,697.57-12,539.07

Finding the Fourth Proportional to 13,857.33, 20,697.57 and 12,539.07

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Solution

The fourth proportional to 13,857.33, 20,697.57 and 12,539.07 is: 18,728.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.33 : 20,697.57 = 12,539.07 : x
  2. Step 2: Convert to fraction form
    13,857.33/20,697.57 = 12,539.07/x
  3. Step 3: Cross multiply
    13,857.33x = 20,697.57 × 12,539.07
  4. Step 4: Simplify right side
    13,857.33x = 259,528,279.06
  5. Step 5: Solve for x
    x = 259,528,279.06/13,857.33
  6. Step 6: Final answer
    x = 18,728.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.