Home / 19,915.76-29,878.14-6,588.72

Finding the Fourth Proportional to 19,915.76, 29,878.14 and 6,588.72

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Solution

The fourth proportional to 19,915.76, 29,878.14 and 6,588.72 is: 9,884.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.76 : 29,878.14 = 6,588.72 : x
  2. Step 2: Convert to fraction form
    19,915.76/29,878.14 = 6,588.72/x
  3. Step 3: Cross multiply
    19,915.76x = 29,878.14 × 6,588.72
  4. Step 4: Simplify right side
    19,915.76x = 196,858,742.25
  5. Step 5: Solve for x
    x = 196,858,742.25/19,915.76
  6. Step 6: Final answer
    x = 9,884.57

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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.