Home / 12,492.16-18,751.20-9,206.80

Finding the Fourth Proportional to 12,492.16, 18,751.20 and 9,206.80

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Solution

The fourth proportional to 12,492.16, 18,751.20 and 9,206.80 is: 13,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.16 : 18,751.20 = 9,206.80 : x
  2. Step 2: Convert to fraction form
    12,492.16/18,751.20 = 9,206.80/x
  3. Step 3: Cross multiply
    12,492.16x = 18,751.20 × 9,206.80
  4. Step 4: Simplify right side
    12,492.16x = 172,638,548.16
  5. Step 5: Solve for x
    x = 172,638,548.16/12,492.16
  6. Step 6: Final answer
    x = 13,819.75

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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.