Home / 28,631.84-42,948.72-20,348.96

Finding the Fourth Proportional to 28,631.84, 42,948.72 and 20,348.96

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Solution

The fourth proportional to 28,631.84, 42,948.72 and 20,348.96 is: 30,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.84 : 42,948.72 = 20,348.96 : x
  2. Step 2: Convert to fraction form
    28,631.84/42,948.72 = 20,348.96/x
  3. Step 3: Cross multiply
    28,631.84x = 42,948.72 × 20,348.96
  4. Step 4: Simplify right side
    28,631.84x = 873,961,785.33
  5. Step 5: Solve for x
    x = 873,961,785.33/28,631.84
  6. Step 6: Final answer
    x = 30,524.12

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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.