Home / 21,211.36-29,270.52-11,779.31

Finding the Fourth Proportional to 21,211.36, 29,270.52 and 11,779.31

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Solution

The fourth proportional to 21,211.36, 29,270.52 and 11,779.31 is: 16,254.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.36 : 29,270.52 = 11,779.31 : x
  2. Step 2: Convert to fraction form
    21,211.36/29,270.52 = 11,779.31/x
  3. Step 3: Cross multiply
    21,211.36x = 29,270.52 × 11,779.31
  4. Step 4: Simplify right side
    21,211.36x = 344,786,602.12
  5. Step 5: Solve for x
    x = 344,786,602.12/21,211.36
  6. Step 6: Final answer
    x = 16,254.81

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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.