Home / 28,401.78-39,189.84-16,462.78

Finding the Fourth Proportional to 28,401.78, 39,189.84 and 16,462.78

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Solution

The fourth proportional to 28,401.78, 39,189.84 and 16,462.78 is: 22,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.78 : 39,189.84 = 16,462.78 : x
  2. Step 2: Convert to fraction form
    28,401.78/39,189.84 = 16,462.78/x
  3. Step 3: Cross multiply
    28,401.78x = 39,189.84 × 16,462.78
  4. Step 4: Simplify right side
    28,401.78x = 645,173,714.16
  5. Step 5: Solve for x
    x = 645,173,714.16/28,401.78
  6. Step 6: Final answer
    x = 22,715.96

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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.