Home / 21,210.62-29,271.64-11,779.22

Finding the Fourth Proportional to 21,210.62, 29,271.64 and 11,779.22

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Solution

The fourth proportional to 21,210.62, 29,271.64 and 11,779.22 is: 16,255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.62 : 29,271.64 = 11,779.22 : x
  2. Step 2: Convert to fraction form
    21,210.62/29,271.64 = 11,779.22/x
  3. Step 3: Cross multiply
    21,210.62x = 29,271.64 × 11,779.22
  4. Step 4: Simplify right side
    21,210.62x = 344,797,087.32
  5. Step 5: Solve for x
    x = 344,797,087.32/21,210.62
  6. Step 6: Final answer
    x = 16,255.87

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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.