Home / 20,463.80-28,237.50-12,907.28

Finding the Fourth Proportional to 20,463.80, 28,237.50 and 12,907.28

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Solution

The fourth proportional to 20,463.80, 28,237.50 and 12,907.28 is: 17,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.80 : 28,237.50 = 12,907.28 : x
  2. Step 2: Convert to fraction form
    20,463.80/28,237.50 = 12,907.28/x
  3. Step 3: Cross multiply
    20,463.80x = 28,237.50 × 12,907.28
  4. Step 4: Simplify right side
    20,463.80x = 364,469,389.59
  5. Step 5: Solve for x
    x = 364,469,389.59/20,463.80
  6. Step 6: Final answer
    x = 17,810.45

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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.