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Finding the Fourth Proportional to 12,492.30, 18,746.55 and 7,227.30

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Solution

The fourth proportional to 12,492.30, 18,746.55 and 7,227.30 is: 10,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.30 : 18,746.55 = 7,227.30 : x
  2. Step 2: Convert to fraction form
    12,492.30/18,746.55 = 7,227.30/x
  3. Step 3: Cross multiply
    12,492.30x = 18,746.55 × 7,227.30
  4. Step 4: Simplify right side
    12,492.30x = 135,486,940.82
  5. Step 5: Solve for x
    x = 135,486,940.82/12,492.30
  6. Step 6: Final answer
    x = 10,845.64

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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.