Home / 21,284.13-29,372.09-12,336.81

Finding the Fourth Proportional to 21,284.13, 29,372.09 and 12,336.81

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Solution

The fourth proportional to 21,284.13, 29,372.09 and 12,336.81 is: 17,024.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.13 : 29,372.09 = 12,336.81 : x
  2. Step 2: Convert to fraction form
    21,284.13/29,372.09 = 12,336.81/x
  3. Step 3: Cross multiply
    21,284.13x = 29,372.09 × 12,336.81
  4. Step 4: Simplify right side
    21,284.13x = 362,357,969.63
  5. Step 5: Solve for x
    x = 362,357,969.63/21,284.13
  6. Step 6: Final answer
    x = 17,024.80

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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.