Home / 20,518.29-28,313.22-11,564.94

Finding the Fourth Proportional to 20,518.29, 28,313.22 and 11,564.94

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Solution

The fourth proportional to 20,518.29, 28,313.22 and 11,564.94 is: 15,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.29 : 28,313.22 = 11,564.94 : x
  2. Step 2: Convert to fraction form
    20,518.29/28,313.22 = 11,564.94/x
  3. Step 3: Cross multiply
    20,518.29x = 28,313.22 × 11,564.94
  4. Step 4: Simplify right side
    20,518.29x = 327,440,690.51
  5. Step 5: Solve for x
    x = 327,440,690.51/20,518.29
  6. Step 6: Final answer
    x = 15,958.48

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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.