Home / 11,057.55-15,243.30-8,400.35

Finding the Fourth Proportional to 11,057.55, 15,243.30 and 8,400.35

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Solution

The fourth proportional to 11,057.55, 15,243.30 and 8,400.35 is: 11,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,057.55 : 15,243.30 = 8,400.35 : x
  2. Step 2: Convert to fraction form
    11,057.55/15,243.30 = 8,400.35/x
  3. Step 3: Cross multiply
    11,057.55x = 15,243.30 × 8,400.35
  4. Step 4: Simplify right side
    11,057.55x = 128,049,055.16
  5. Step 5: Solve for x
    x = 128,049,055.16/11,057.55
  6. Step 6: Final answer
    x = 11,580.24

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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.