Home / 28,678.48-39,576.36-16,103.28

Finding the Fourth Proportional to 28,678.48, 39,576.36 and 16,103.28

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Solution

The fourth proportional to 28,678.48, 39,576.36 and 16,103.28 is: 22,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.48 : 39,576.36 = 16,103.28 : x
  2. Step 2: Convert to fraction form
    28,678.48/39,576.36 = 16,103.28/x
  3. Step 3: Cross multiply
    28,678.48x = 39,576.36 × 16,103.28
  4. Step 4: Simplify right side
    28,678.48x = 637,309,206.46
  5. Step 5: Solve for x
    x = 637,309,206.46/28,678.48
  6. Step 6: Final answer
    x = 22,222.56

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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.