Home / 21,431.93-29,577.12-12,933.92

Finding the Fourth Proportional to 21,431.93, 29,577.12 and 12,933.92

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Solution

The fourth proportional to 21,431.93, 29,577.12 and 12,933.92 is: 17,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.93 : 29,577.12 = 12,933.92 : x
  2. Step 2: Convert to fraction form
    21,431.93/29,577.12 = 12,933.92/x
  3. Step 3: Cross multiply
    21,431.93x = 29,577.12 × 12,933.92
  4. Step 4: Simplify right side
    21,431.93x = 382,548,030.52
  5. Step 5: Solve for x
    x = 382,548,030.52/21,431.93
  6. Step 6: Final answer
    x = 17,849.44

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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.