Home / 11,125.40-16,663.80-7,820.60

Finding the Fourth Proportional to 11,125.40, 16,663.80 and 7,820.60

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Solution

The fourth proportional to 11,125.40, 16,663.80 and 7,820.60 is: 11,713.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.40 : 16,663.80 = 7,820.60 : x
  2. Step 2: Convert to fraction form
    11,125.40/16,663.80 = 7,820.60/x
  3. Step 3: Cross multiply
    11,125.40x = 16,663.80 × 7,820.60
  4. Step 4: Simplify right side
    11,125.40x = 130,320,914.28
  5. Step 5: Solve for x
    x = 130,320,914.28/11,125.40
  6. Step 6: Final answer
    x = 11,713.82

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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.