Home / 21,284.82-29,347.04-13,313.21

Finding the Fourth Proportional to 21,284.82, 29,347.04 and 13,313.21

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Solution

The fourth proportional to 21,284.82, 29,347.04 and 13,313.21 is: 18,355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.82 : 29,347.04 = 13,313.21 : x
  2. Step 2: Convert to fraction form
    21,284.82/29,347.04 = 13,313.21/x
  3. Step 3: Cross multiply
    21,284.82x = 29,347.04 × 13,313.21
  4. Step 4: Simplify right side
    21,284.82x = 390,703,093.10
  5. Step 5: Solve for x
    x = 390,703,093.10/21,284.82
  6. Step 6: Final answer
    x = 18,355.95

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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.