Home / 21,577.08-29,776.58-12,143.82

Finding the Fourth Proportional to 21,577.08, 29,776.58 and 12,143.82

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Solution

The fourth proportional to 21,577.08, 29,776.58 and 12,143.82 is: 16,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.08 : 29,776.58 = 12,143.82 : x
  2. Step 2: Convert to fraction form
    21,577.08/29,776.58 = 12,143.82/x
  3. Step 3: Cross multiply
    21,577.08x = 29,776.58 × 12,143.82
  4. Step 4: Simplify right side
    21,577.08x = 361,601,427.74
  5. Step 5: Solve for x
    x = 361,601,427.74/21,577.08
  6. Step 6: Final answer
    x = 16,758.59

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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.