Home / 21,382.37-29,506.91-11,821.67

Finding the Fourth Proportional to 21,382.37, 29,506.91 and 11,821.67

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Solution

The fourth proportional to 21,382.37, 29,506.91 and 11,821.67 is: 16,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.37 : 29,506.91 = 11,821.67 : x
  2. Step 2: Convert to fraction form
    21,382.37/29,506.91 = 11,821.67/x
  3. Step 3: Cross multiply
    21,382.37x = 29,506.91 × 11,821.67
  4. Step 4: Simplify right side
    21,382.37x = 348,820,952.74
  5. Step 5: Solve for x
    x = 348,820,952.74/21,382.37
  6. Step 6: Final answer
    x = 16,313.48

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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.