Home / 20,647.43-28,497.98-13,574.51

Finding the Fourth Proportional to 20,647.43, 28,497.98 and 13,574.51

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Solution

The fourth proportional to 20,647.43, 28,497.98 and 13,574.51 is: 18,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.43 : 28,497.98 = 13,574.51 : x
  2. Step 2: Convert to fraction form
    20,647.43/28,497.98 = 13,574.51/x
  3. Step 3: Cross multiply
    20,647.43x = 28,497.98 × 13,574.51
  4. Step 4: Simplify right side
    20,647.43x = 386,846,114.49
  5. Step 5: Solve for x
    x = 386,846,114.49/20,647.43
  6. Step 6: Final answer
    x = 18,735.80

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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.