Home / 13,427.28-18,526.32-8,383.68

Finding the Fourth Proportional to 13,427.28, 18,526.32 and 8,383.68

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Solution

The fourth proportional to 13,427.28, 18,526.32 and 8,383.68 is: 11,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.28 : 18,526.32 = 8,383.68 : x
  2. Step 2: Convert to fraction form
    13,427.28/18,526.32 = 8,383.68/x
  3. Step 3: Cross multiply
    13,427.28x = 18,526.32 × 8,383.68
  4. Step 4: Simplify right side
    13,427.28x = 155,318,738.46
  5. Step 5: Solve for x
    x = 155,318,738.46/13,427.28
  6. Step 6: Final answer
    x = 11,567.40

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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.