Home / 21,258.10-29,338.10-11,699.90

Finding the Fourth Proportional to 21,258.10, 29,338.10 and 11,699.90

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Solution

The fourth proportional to 21,258.10, 29,338.10 and 11,699.90 is: 16,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.10 : 29,338.10 = 11,699.90 : x
  2. Step 2: Convert to fraction form
    21,258.10/29,338.10 = 11,699.90/x
  3. Step 3: Cross multiply
    21,258.10x = 29,338.10 × 11,699.90
  4. Step 4: Simplify right side
    21,258.10x = 343,252,836.19
  5. Step 5: Solve for x
    x = 343,252,836.19/21,258.10
  6. Step 6: Final answer
    x = 16,146.92

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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.