Home / 28,754.70-39,678.76-16,178.64

Finding the Fourth Proportional to 28,754.70, 39,678.76 and 16,178.64

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Solution

The fourth proportional to 28,754.70, 39,678.76 and 16,178.64 is: 22,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,754.70 : 39,678.76 = 16,178.64 : x
  2. Step 2: Convert to fraction form
    28,754.70/39,678.76 = 16,178.64/x
  3. Step 3: Cross multiply
    28,754.70x = 39,678.76 × 16,178.64
  4. Step 4: Simplify right side
    28,754.70x = 641,948,373.69
  5. Step 5: Solve for x
    x = 641,948,373.69/28,754.70
  6. Step 6: Final answer
    x = 22,324.99

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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.