Home / 20,492.46-28,260.90-12,930.30

Finding the Fourth Proportional to 20,492.46, 28,260.90 and 12,930.30

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Solution

The fourth proportional to 20,492.46, 28,260.90 and 12,930.30 is: 17,832.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.46 : 28,260.90 = 12,930.30 : x
  2. Step 2: Convert to fraction form
    20,492.46/28,260.90 = 12,930.30/x
  3. Step 3: Cross multiply
    20,492.46x = 28,260.90 × 12,930.30
  4. Step 4: Simplify right side
    20,492.46x = 365,421,915.27
  5. Step 5: Solve for x
    x = 365,421,915.27/20,492.46
  6. Step 6: Final answer
    x = 17,832.02

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1.5x scale

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.