Home / 12,615.28-18,921.60-5,595.42

Finding the Fourth Proportional to 12,615.28, 18,921.60 and 5,595.42

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Solution

The fourth proportional to 12,615.28, 18,921.60 and 5,595.42 is: 8,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.28 : 18,921.60 = 5,595.42 : x
  2. Step 2: Convert to fraction form
    12,615.28/18,921.60 = 5,595.42/x
  3. Step 3: Cross multiply
    12,615.28x = 18,921.60 × 5,595.42
  4. Step 4: Simplify right side
    12,615.28x = 105,874,299.07
  5. Step 5: Solve for x
    x = 105,874,299.07/12,615.28
  6. Step 6: Final answer
    x = 8,392.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.