Home / 21,210.50-29,270.50-11,779.14

Finding the Fourth Proportional to 21,210.50, 29,270.50 and 11,779.14

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Solution

The fourth proportional to 21,210.50, 29,270.50 and 11,779.14 is: 16,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.50 : 29,270.50 = 11,779.14 : x
  2. Step 2: Convert to fraction form
    21,210.50/29,270.50 = 11,779.14/x
  3. Step 3: Cross multiply
    21,210.50x = 29,270.50 × 11,779.14
  4. Step 4: Simplify right side
    21,210.50x = 344,781,317.37
  5. Step 5: Solve for x
    x = 344,781,317.37/21,210.50
  6. Step 6: Final answer
    x = 16,255.22

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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.