Home / 21,303.54-29,401.08-12,808.44

Finding the Fourth Proportional to 21,303.54, 29,401.08 and 12,808.44

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Solution

The fourth proportional to 21,303.54, 29,401.08 and 12,808.44 is: 17,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.54 : 29,401.08 = 12,808.44 : x
  2. Step 2: Convert to fraction form
    21,303.54/29,401.08 = 12,808.44/x
  3. Step 3: Cross multiply
    21,303.54x = 29,401.08 × 12,808.44
  4. Step 4: Simplify right side
    21,303.54x = 376,581,969.12
  5. Step 5: Solve for x
    x = 376,581,969.12/21,303.54
  6. Step 6: Final answer
    x = 17,676.97

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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.