Home / 21,298.40-29,389.20-11,863.52

Finding the Fourth Proportional to 21,298.40, 29,389.20 and 11,863.52

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Solution

The fourth proportional to 21,298.40, 29,389.20 and 11,863.52 is: 16,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.40 : 29,389.20 = 11,863.52 : x
  2. Step 2: Convert to fraction form
    21,298.40/29,389.20 = 11,863.52/x
  3. Step 3: Cross multiply
    21,298.40x = 29,389.20 × 11,863.52
  4. Step 4: Simplify right side
    21,298.40x = 348,659,361.98
  5. Step 5: Solve for x
    x = 348,659,361.98/21,298.40
  6. Step 6: Final answer
    x = 16,370.21

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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.