Home / 20,313.80-28,035.69-11,363.16

Finding the Fourth Proportional to 20,313.80, 28,035.69 and 11,363.16

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Solution

The fourth proportional to 20,313.80, 28,035.69 and 11,363.16 is: 15,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.80 : 28,035.69 = 11,363.16 : x
  2. Step 2: Convert to fraction form
    20,313.80/28,035.69 = 11,363.16/x
  3. Step 3: Cross multiply
    20,313.80x = 28,035.69 × 11,363.16
  4. Step 4: Simplify right side
    20,313.80x = 318,573,974.36
  5. Step 5: Solve for x
    x = 318,573,974.36/20,313.80
  6. Step 6: Final answer
    x = 15,682.64

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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.