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Finding the Fourth Proportional to 38,628.80, 57,928.80 and 26,907.20

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Solution

The fourth proportional to 38,628.80, 57,928.80 and 26,907.20 is: 40,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,628.80 : 57,928.80 = 26,907.20 : x
  2. Step 2: Convert to fraction form
    38,628.80/57,928.80 = 26,907.20/x
  3. Step 3: Cross multiply
    38,628.80x = 57,928.80 × 26,907.20
  4. Step 4: Simplify right side
    38,628.80x = 1,558,701,807.36
  5. Step 5: Solve for x
    x = 1,558,701,807.36/38,628.80
  6. Step 6: Final answer
    x = 40,350.77

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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.