Home / 12,430.56-18,648.24-5,505.12

Finding the Fourth Proportional to 12,430.56, 18,648.24 and 5,505.12

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Solution

The fourth proportional to 12,430.56, 18,648.24 and 5,505.12 is: 8,258.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.56 : 18,648.24 = 5,505.12 : x
  2. Step 2: Convert to fraction form
    12,430.56/18,648.24 = 5,505.12/x
  3. Step 3: Cross multiply
    12,430.56x = 18,648.24 × 5,505.12
  4. Step 4: Simplify right side
    12,430.56x = 102,660,798.99
  5. Step 5: Solve for x
    x = 102,660,798.99/12,430.56
  6. Step 6: Final answer
    x = 8,258.74

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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.