Home / 21,210.56-29,270.12-11,778.96

Finding the Fourth Proportional to 21,210.56, 29,270.12 and 11,778.96

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Solution

The fourth proportional to 21,210.56, 29,270.12 and 11,778.96 is: 16,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.56 : 29,270.12 = 11,778.96 : x
  2. Step 2: Convert to fraction form
    21,210.56/29,270.12 = 11,778.96/x
  3. Step 3: Cross multiply
    21,210.56x = 29,270.12 × 11,778.96
  4. Step 4: Simplify right side
    21,210.56x = 344,771,572.68
  5. Step 5: Solve for x
    x = 344,771,572.68/21,210.56
  6. Step 6: Final answer
    x = 16,254.71

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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.