Home / 11,119.84-15,343.68-6,403.36

Finding the Fourth Proportional to 11,119.84, 15,343.68 and 6,403.36

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Solution

The fourth proportional to 11,119.84, 15,343.68 and 6,403.36 is: 8,835.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.84 : 15,343.68 = 6,403.36 : x
  2. Step 2: Convert to fraction form
    11,119.84/15,343.68 = 6,403.36/x
  3. Step 3: Cross multiply
    11,119.84x = 15,343.68 × 6,403.36
  4. Step 4: Simplify right side
    11,119.84x = 98,251,106.76
  5. Step 5: Solve for x
    x = 98,251,106.76/11,119.84
  6. Step 6: Final answer
    x = 8,835.66

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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.