Home / 28,441.40-42,627.50-20,123.82

Finding the Fourth Proportional to 28,441.40, 42,627.50 and 20,123.82

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Solution

The fourth proportional to 28,441.40, 42,627.50 and 20,123.82 is: 30,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441.40 : 42,627.50 = 20,123.82 : x
  2. Step 2: Convert to fraction form
    28,441.40/42,627.50 = 20,123.82/x
  3. Step 3: Cross multiply
    28,441.40x = 42,627.50 × 20,123.82
  4. Step 4: Simplify right side
    28,441.40x = 857,828,137.05
  5. Step 5: Solve for x
    x = 857,828,137.05/28,441.40
  6. Step 6: Final answer
    x = 30,161.25

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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.