Home / 15,012.03-20,717.88-8,724

Finding the Fourth Proportional to 15,012.03, 20,717.88 and 8,724

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Solution

The fourth proportional to 15,012.03, 20,717.88 and 8,724 is: 12,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.03 : 20,717.88 = 8,724 : x
  2. Step 2: Convert to fraction form
    15,012.03/20,717.88 = 8,724/x
  3. Step 3: Cross multiply
    15,012.03x = 20,717.88 × 8,724
  4. Step 4: Simplify right side
    15,012.03x = 180,742,785.12
  5. Step 5: Solve for x
    x = 180,742,785.12/15,012.03
  6. Step 6: Final answer
    x = 12,039.86

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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.