Home / 10,220.28-14,109.80-6,638.46

Finding the Fourth Proportional to 10,220.28, 14,109.80 and 6,638.46

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Solution

The fourth proportional to 10,220.28, 14,109.80 and 6,638.46 is: 9,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.28 : 14,109.80 = 6,638.46 : x
  2. Step 2: Convert to fraction form
    10,220.28/14,109.80 = 6,638.46/x
  3. Step 3: Cross multiply
    10,220.28x = 14,109.80 × 6,638.46
  4. Step 4: Simplify right side
    10,220.28x = 93,667,256.80
  5. Step 5: Solve for x
    x = 93,667,256.80/10,220.28
  6. Step 6: Final answer
    x = 9,164.85

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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.