Home / 11,154.89-15,392.61-6,678.53

Finding the Fourth Proportional to 11,154.89, 15,392.61 and 6,678.53

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Solution

The fourth proportional to 11,154.89, 15,392.61 and 6,678.53 is: 9,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.89 : 15,392.61 = 6,678.53 : x
  2. Step 2: Convert to fraction form
    11,154.89/15,392.61 = 6,678.53/x
  3. Step 3: Cross multiply
    11,154.89x = 15,392.61 × 6,678.53
  4. Step 4: Simplify right side
    11,154.89x = 102,799,926.35
  5. Step 5: Solve for x
    x = 102,799,926.35/11,154.89
  6. Step 6: Final answer
    x = 9,215.68

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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.