Home / 21,461.07-29,618.01-11,901.90

Finding the Fourth Proportional to 21,461.07, 29,618.01 and 11,901.90

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Solution

The fourth proportional to 21,461.07, 29,618.01 and 11,901.90 is: 16,425.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.07 : 29,618.01 = 11,901.90 : x
  2. Step 2: Convert to fraction form
    21,461.07/29,618.01 = 11,901.90/x
  3. Step 3: Cross multiply
    21,461.07x = 29,618.01 × 11,901.90
  4. Step 4: Simplify right side
    21,461.07x = 352,510,593.22
  5. Step 5: Solve for x
    x = 352,510,593.22/21,461.07
  6. Step 6: Final answer
    x = 16,425.58

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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.