Home / 20,923.69-28,862.44-14,129.41

Finding the Fourth Proportional to 20,923.69, 28,862.44 and 14,129.41

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Solution

The fourth proportional to 20,923.69, 28,862.44 and 14,129.41 is: 19,490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.69 : 28,862.44 = 14,129.41 : x
  2. Step 2: Convert to fraction form
    20,923.69/28,862.44 = 14,129.41/x
  3. Step 3: Cross multiply
    20,923.69x = 28,862.44 × 14,129.41
  4. Step 4: Simplify right side
    20,923.69x = 407,809,248.36
  5. Step 5: Solve for x
    x = 407,809,248.36/20,923.69
  6. Step 6: Final answer
    x = 19,490.31

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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.