Home / 18,826.24-28,239.36-6,515.20

Finding the Fourth Proportional to 18,826.24, 28,239.36 and 6,515.20

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Solution

The fourth proportional to 18,826.24, 28,239.36 and 6,515.20 is: 9,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,826.24 : 28,239.36 = 6,515.20 : x
  2. Step 2: Convert to fraction form
    18,826.24/28,239.36 = 6,515.20/x
  3. Step 3: Cross multiply
    18,826.24x = 28,239.36 × 6,515.20
  4. Step 4: Simplify right side
    18,826.24x = 183,985,078.27
  5. Step 5: Solve for x
    x = 183,985,078.27/18,826.24
  6. Step 6: Final answer
    x = 9,772.80

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1.5x scale

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.