Home / 21,306.48-31,936.44-10,918.80

Finding the Fourth Proportional to 21,306.48, 31,936.44 and 10,918.80

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Solution

The fourth proportional to 21,306.48, 31,936.44 and 10,918.80 is: 16,366.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.48 : 31,936.44 = 10,918.80 : x
  2. Step 2: Convert to fraction form
    21,306.48/31,936.44 = 10,918.80/x
  3. Step 3: Cross multiply
    21,306.48x = 31,936.44 × 10,918.80
  4. Step 4: Simplify right side
    21,306.48x = 348,707,601.07
  5. Step 5: Solve for x
    x = 348,707,601.07/21,306.48
  6. Step 6: Final answer
    x = 16,366.27

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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.