Home / 11,915.04-16,440.36-7,199.58

Finding the Fourth Proportional to 11,915.04, 16,440.36 and 7,199.58

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Solution

The fourth proportional to 11,915.04, 16,440.36 and 7,199.58 is: 9,933.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.04 : 16,440.36 = 7,199.58 : x
  2. Step 2: Convert to fraction form
    11,915.04/16,440.36 = 7,199.58/x
  3. Step 3: Cross multiply
    11,915.04x = 16,440.36 × 7,199.58
  4. Step 4: Simplify right side
    11,915.04x = 118,363,687.05
  5. Step 5: Solve for x
    x = 118,363,687.05/11,915.04
  6. Step 6: Final answer
    x = 9,933.97

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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.