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Finding the Fourth Proportional to 13,580.66, 18,750.08 and 11,068.80

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Solution

The fourth proportional to 13,580.66, 18,750.08 and 11,068.80 is: 15,282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.66 : 18,750.08 = 11,068.80 : x
  2. Step 2: Convert to fraction form
    13,580.66/18,750.08 = 11,068.80/x
  3. Step 3: Cross multiply
    13,580.66x = 18,750.08 × 11,068.80
  4. Step 4: Simplify right side
    13,580.66x = 207,540,948.33
  5. Step 5: Solve for x
    x = 207,540,948.33/13,580.66
  6. Step 6: Final answer
    x = 15,282.09

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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.