Home / 28,631.79-42,951.74-8,912.34

Finding the Fourth Proportional to 28,631.79, 42,951.74 and 8,912.34

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Solution

The fourth proportional to 28,631.79, 42,951.74 and 8,912.34 is: 13,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.79 : 42,951.74 = 8,912.34 : x
  2. Step 2: Convert to fraction form
    28,631.79/42,951.74 = 8,912.34/x
  3. Step 3: Cross multiply
    28,631.79x = 42,951.74 × 8,912.34
  4. Step 4: Simplify right side
    28,631.79x = 382,800,465.91
  5. Step 5: Solve for x
    x = 382,800,465.91/28,631.79
  6. Step 6: Final answer
    x = 13,369.77

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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.