Home / 21,501.66-29,676.72-12,549.99

Finding the Fourth Proportional to 21,501.66, 29,676.72 and 12,549.99

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Solution

The fourth proportional to 21,501.66, 29,676.72 and 12,549.99 is: 17,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.66 : 29,676.72 = 12,549.99 : x
  2. Step 2: Convert to fraction form
    21,501.66/29,676.72 = 12,549.99/x
  3. Step 3: Cross multiply
    21,501.66x = 29,676.72 × 12,549.99
  4. Step 4: Simplify right side
    21,501.66x = 372,442,539.23
  5. Step 5: Solve for x
    x = 372,442,539.23/21,501.66
  6. Step 6: Final answer
    x = 17,321.57

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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.