Home / 12,515.90-18,779.09-5,492.29

Finding the Fourth Proportional to 12,515.90, 18,779.09 and 5,492.29

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Solution

The fourth proportional to 12,515.90, 18,779.09 and 5,492.29 is: 8,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.90 : 18,779.09 = 5,492.29 : x
  2. Step 2: Convert to fraction form
    12,515.90/18,779.09 = 5,492.29/x
  3. Step 3: Cross multiply
    12,515.90x = 18,779.09 × 5,492.29
  4. Step 4: Simplify right side
    12,515.90x = 103,140,180.75
  5. Step 5: Solve for x
    x = 103,140,180.75/12,515.90
  6. Step 6: Final answer
    x = 8,240.73

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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.