Home / 11,240.74-15,513.27-8,403.20

Finding the Fourth Proportional to 11,240.74, 15,513.27 and 8,403.20

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Solution

The fourth proportional to 11,240.74, 15,513.27 and 8,403.20 is: 11,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.74 : 15,513.27 = 8,403.20 : x
  2. Step 2: Convert to fraction form
    11,240.74/15,513.27 = 8,403.20/x
  3. Step 3: Cross multiply
    11,240.74x = 15,513.27 × 8,403.20
  4. Step 4: Simplify right side
    11,240.74x = 130,361,032.90
  5. Step 5: Solve for x
    x = 130,361,032.90/11,240.74
  6. Step 6: Final answer
    x = 11,597.20

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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.