Home / 10,929.72-15,078.60-6,213

Finding the Fourth Proportional to 10,929.72, 15,078.60 and 6,213

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Solution

The fourth proportional to 10,929.72, 15,078.60 and 6,213 is: 8,571.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.72 : 15,078.60 = 6,213 : x
  2. Step 2: Convert to fraction form
    10,929.72/15,078.60 = 6,213/x
  3. Step 3: Cross multiply
    10,929.72x = 15,078.60 × 6,213
  4. Step 4: Simplify right side
    10,929.72x = 93,683,341.80
  5. Step 5: Solve for x
    x = 93,683,341.80/10,929.72
  6. Step 6: Final answer
    x = 8,571.43

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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.