Home / 28,451.44-42,642.60-20,133.89

Finding the Fourth Proportional to 28,451.44, 42,642.60 and 20,133.89

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Solution

The fourth proportional to 28,451.44, 42,642.60 and 20,133.89 is: 30,176.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.44 : 42,642.60 = 20,133.89 : x
  2. Step 2: Convert to fraction form
    28,451.44/42,642.60 = 20,133.89/x
  3. Step 3: Cross multiply
    28,451.44x = 42,642.60 × 20,133.89
  4. Step 4: Simplify right side
    28,451.44x = 858,561,417.71
  5. Step 5: Solve for x
    x = 858,561,417.71/28,451.44
  6. Step 6: Final answer
    x = 30,176.38

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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.