Home / 21,252.42-29,328.72-11,820.98

Finding the Fourth Proportional to 21,252.42, 29,328.72 and 11,820.98

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Solution

The fourth proportional to 21,252.42, 29,328.72 and 11,820.98 is: 16,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.42 : 29,328.72 = 11,820.98 : x
  2. Step 2: Convert to fraction form
    21,252.42/29,328.72 = 11,820.98/x
  3. Step 3: Cross multiply
    21,252.42x = 29,328.72 × 11,820.98
  4. Step 4: Simplify right side
    21,252.42x = 346,694,212.55
  5. Step 5: Solve for x
    x = 346,694,212.55/21,252.42
  6. Step 6: Final answer
    x = 16,313.16

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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.