Home / 21,162.09-31,743.40-14,586.51

Finding the Fourth Proportional to 21,162.09, 31,743.40 and 14,586.51

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Solution

The fourth proportional to 21,162.09, 31,743.40 and 14,586.51 is: 21,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.09 : 31,743.40 = 14,586.51 : x
  2. Step 2: Convert to fraction form
    21,162.09/31,743.40 = 14,586.51/x
  3. Step 3: Cross multiply
    21,162.09x = 31,743.40 × 14,586.51
  4. Step 4: Simplify right side
    21,162.09x = 463,025,421.53
  5. Step 5: Solve for x
    x = 463,025,421.53/21,162.09
  6. Step 6: Final answer
    x = 21,879.95

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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.