Home / 21,323.64-29,426.30-12,372.69

Finding the Fourth Proportional to 21,323.64, 29,426.30 and 12,372.69

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Solution

The fourth proportional to 21,323.64, 29,426.30 and 12,372.69 is: 17,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.64 : 29,426.30 = 12,372.69 : x
  2. Step 2: Convert to fraction form
    21,323.64/29,426.30 = 12,372.69/x
  3. Step 3: Cross multiply
    21,323.64x = 29,426.30 × 12,372.69
  4. Step 4: Simplify right side
    21,323.64x = 364,082,487.75
  5. Step 5: Solve for x
    x = 364,082,487.75/21,323.64
  6. Step 6: Final answer
    x = 17,074.12

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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.