Home / 21,800.71-30,064.31-14,253.51

Finding the Fourth Proportional to 21,800.71, 30,064.31 and 14,253.51

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Solution

The fourth proportional to 21,800.71, 30,064.31 and 14,253.51 is: 19,656.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.71 : 30,064.31 = 14,253.51 : x
  2. Step 2: Convert to fraction form
    21,800.71/30,064.31 = 14,253.51/x
  3. Step 3: Cross multiply
    21,800.71x = 30,064.31 × 14,253.51
  4. Step 4: Simplify right side
    21,800.71x = 428,522,033.77
  5. Step 5: Solve for x
    x = 428,522,033.77/21,800.71
  6. Step 6: Final answer
    x = 19,656.33

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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.