Home / 21,661.47-29,893.06-12,709.12

Finding the Fourth Proportional to 21,661.47, 29,893.06 and 12,709.12

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Solution

The fourth proportional to 21,661.47, 29,893.06 and 12,709.12 is: 17,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.47 : 29,893.06 = 12,709.12 : x
  2. Step 2: Convert to fraction form
    21,661.47/29,893.06 = 12,709.12/x
  3. Step 3: Cross multiply
    21,661.47x = 29,893.06 × 12,709.12
  4. Step 4: Simplify right side
    21,661.47x = 379,914,423.16
  5. Step 5: Solve for x
    x = 379,914,423.16/21,661.47
  6. Step 6: Final answer
    x = 17,538.72

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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.