Home / 21,252.06-29,327.88-11,820.64

Finding the Fourth Proportional to 21,252.06, 29,327.88 and 11,820.64

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Solution

The fourth proportional to 21,252.06, 29,327.88 and 11,820.64 is: 16,312.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.06 : 29,327.88 = 11,820.64 : x
  2. Step 2: Convert to fraction form
    21,252.06/29,327.88 = 11,820.64/x
  3. Step 3: Cross multiply
    21,252.06x = 29,327.88 × 11,820.64
  4. Step 4: Simplify right side
    21,252.06x = 346,674,311.44
  5. Step 5: Solve for x
    x = 346,674,311.44/21,252.06
  6. Step 6: Final answer
    x = 16,312.50

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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.