Home / 10,220.20-14,109.65-6,638.35

Finding the Fourth Proportional to 10,220.20, 14,109.65 and 6,638.35

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Solution

The fourth proportional to 10,220.20, 14,109.65 and 6,638.35 is: 9,164.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.20 : 14,109.65 = 6,638.35 : x
  2. Step 2: Convert to fraction form
    10,220.20/14,109.65 = 6,638.35/x
  3. Step 3: Cross multiply
    10,220.20x = 14,109.65 × 6,638.35
  4. Step 4: Simplify right side
    10,220.20x = 93,664,795.08
  5. Step 5: Solve for x
    x = 93,664,795.08/10,220.20
  6. Step 6: Final answer
    x = 9,164.67

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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.