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Finding the Fourth Proportional to 18,090.76, 24,945.15 and 11,368.30

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Solution

The fourth proportional to 18,090.76, 24,945.15 and 11,368.30 is: 15,675.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.76 : 24,945.15 = 11,368.30 : x
  2. Step 2: Convert to fraction form
    18,090.76/24,945.15 = 11,368.30/x
  3. Step 3: Cross multiply
    18,090.76x = 24,945.15 × 11,368.30
  4. Step 4: Simplify right side
    18,090.76x = 283,583,948.75
  5. Step 5: Solve for x
    x = 283,583,948.75/18,090.76
  6. Step 6: Final answer
    x = 15,675.62

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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.