Home / 28,123.97-42,137.34-14,777.11

Finding the Fourth Proportional to 28,123.97, 42,137.34 and 14,777.11

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Solution

The fourth proportional to 28,123.97, 42,137.34 and 14,777.11 is: 22,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.97 : 42,137.34 = 14,777.11 : x
  2. Step 2: Convert to fraction form
    28,123.97/42,137.34 = 14,777.11/x
  3. Step 3: Cross multiply
    28,123.97x = 42,137.34 × 14,777.11
  4. Step 4: Simplify right side
    28,123.97x = 622,668,295.24
  5. Step 5: Solve for x
    x = 622,668,295.24/28,123.97
  6. Step 6: Final answer
    x = 22,140.13

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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.