Home / 28,313.19-39,074.13-18,736.56

Finding the Fourth Proportional to 28,313.19, 39,074.13 and 18,736.56

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Solution

The fourth proportional to 28,313.19, 39,074.13 and 18,736.56 is: 25,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.19 : 39,074.13 = 18,736.56 : x
  2. Step 2: Convert to fraction form
    28,313.19/39,074.13 = 18,736.56/x
  3. Step 3: Cross multiply
    28,313.19x = 39,074.13 × 18,736.56
  4. Step 4: Simplify right side
    28,313.19x = 732,114,781.19
  5. Step 5: Solve for x
    x = 732,114,781.19/28,313.19
  6. Step 6: Final answer
    x = 25,857.73

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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.