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Finding the Fourth Proportional to 12,462.40, 18,693.60 and 11,101.60

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Solution

The fourth proportional to 12,462.40, 18,693.60 and 11,101.60 is: 16,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.40 : 18,693.60 = 11,101.60 : x
  2. Step 2: Convert to fraction form
    12,462.40/18,693.60 = 11,101.60/x
  3. Step 3: Cross multiply
    12,462.40x = 18,693.60 × 11,101.60
  4. Step 4: Simplify right side
    12,462.40x = 207,528,869.76
  5. Step 5: Solve for x
    x = 207,528,869.76/12,462.40
  6. Step 6: Final answer
    x = 16,652.40

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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.