Home / 21,417.12-29,555.33-11,856.09

Finding the Fourth Proportional to 21,417.12, 29,555.33 and 11,856.09

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Solution

The fourth proportional to 21,417.12, 29,555.33 and 11,856.09 is: 16,361.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.12 : 29,555.33 = 11,856.09 : x
  2. Step 2: Convert to fraction form
    21,417.12/29,555.33 = 11,856.09/x
  3. Step 3: Cross multiply
    21,417.12x = 29,555.33 × 11,856.09
  4. Step 4: Simplify right side
    21,417.12x = 350,410,593.18
  5. Step 5: Solve for x
    x = 350,410,593.18/21,417.12
  6. Step 6: Final answer
    x = 16,361.24

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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.