Home / 19,231.50-28,824.60-8,689.20

Finding the Fourth Proportional to 19,231.50, 28,824.60 and 8,689.20

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Solution

The fourth proportional to 19,231.50, 28,824.60 and 8,689.20 is: 13,023.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.50 : 28,824.60 = 8,689.20 : x
  2. Step 2: Convert to fraction form
    19,231.50/28,824.60 = 8,689.20/x
  3. Step 3: Cross multiply
    19,231.50x = 28,824.60 × 8,689.20
  4. Step 4: Simplify right side
    19,231.50x = 250,462,714.32
  5. Step 5: Solve for x
    x = 250,462,714.32/19,231.50
  6. Step 6: Final answer
    x = 13,023.57

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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.