Home / 28,776.38-39,711.40-16,835.36

Finding the Fourth Proportional to 28,776.38, 39,711.40 and 16,835.36

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Solution

The fourth proportional to 28,776.38, 39,711.40 and 16,835.36 is: 23,232.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.38 : 39,711.40 = 16,835.36 : x
  2. Step 2: Convert to fraction form
    28,776.38/39,711.40 = 16,835.36/x
  3. Step 3: Cross multiply
    28,776.38x = 39,711.40 × 16,835.36
  4. Step 4: Simplify right side
    28,776.38x = 668,555,474.46
  5. Step 5: Solve for x
    x = 668,555,474.46/28,776.38
  6. Step 6: Final answer
    x = 23,232.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.