Home / 14,688.28-20,270.28-8,402.68

Finding the Fourth Proportional to 14,688.28, 20,270.28 and 8,402.68

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Solution

The fourth proportional to 14,688.28, 20,270.28 and 8,402.68 is: 11,595.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.28 : 20,270.28 = 8,402.68 : x
  2. Step 2: Convert to fraction form
    14,688.28/20,270.28 = 8,402.68/x
  3. Step 3: Cross multiply
    14,688.28x = 20,270.28 × 8,402.68
  4. Step 4: Simplify right side
    14,688.28x = 170,324,676.35
  5. Step 5: Solve for x
    x = 170,324,676.35/14,688.28
  6. Step 6: Final answer
    x = 11,595.96

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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.