Home / 34,285.14-51,431.76-13,220.28

Finding the Fourth Proportional to 34,285.14, 51,431.76 and 13,220.28

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Solution

The fourth proportional to 34,285.14, 51,431.76 and 13,220.28 is: 19,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,285.14 : 51,431.76 = 13,220.28 : x
  2. Step 2: Convert to fraction form
    34,285.14/51,431.76 = 13,220.28/x
  3. Step 3: Cross multiply
    34,285.14x = 51,431.76 × 13,220.28
  4. Step 4: Simplify right side
    34,285.14x = 679,942,268.09
  5. Step 5: Solve for x
    x = 679,942,268.09/34,285.14
  6. Step 6: Final answer
    x = 19,831.98

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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.