Home / 21,240.60-31,861.44-11,875.38

Finding the Fourth Proportional to 21,240.60, 31,861.44 and 11,875.38

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Solution

The fourth proportional to 21,240.60, 31,861.44 and 11,875.38 is: 17,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.60 : 31,861.44 = 11,875.38 : x
  2. Step 2: Convert to fraction form
    21,240.60/31,861.44 = 11,875.38/x
  3. Step 3: Cross multiply
    21,240.60x = 31,861.44 × 11,875.38
  4. Step 4: Simplify right side
    21,240.60x = 378,366,707.35
  5. Step 5: Solve for x
    x = 378,366,707.35/21,240.60
  6. Step 6: Final answer
    x = 17,813.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.