Home / 21,313.32-29,412.06-11,881.64

Finding the Fourth Proportional to 21,313.32, 29,412.06 and 11,881.64

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Solution

The fourth proportional to 21,313.32, 29,412.06 and 11,881.64 is: 16,396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.32 : 29,412.06 = 11,881.64 : x
  2. Step 2: Convert to fraction form
    21,313.32/29,412.06 = 11,881.64/x
  3. Step 3: Cross multiply
    21,313.32x = 29,412.06 × 11,881.64
  4. Step 4: Simplify right side
    21,313.32x = 349,463,508.58
  5. Step 5: Solve for x
    x = 349,463,508.58/21,313.32
  6. Step 6: Final answer
    x = 16,396.48

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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.