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Finding the Fourth Proportional to 18,841.01, 28,259.55 and 9,477.20

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Solution

The fourth proportional to 18,841.01, 28,259.55 and 9,477.20 is: 14,214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.01 : 28,259.55 = 9,477.20 : x
  2. Step 2: Convert to fraction form
    18,841.01/28,259.55 = 9,477.20/x
  3. Step 3: Cross multiply
    18,841.01x = 28,259.55 × 9,477.20
  4. Step 4: Simplify right side
    18,841.01x = 267,821,265.96
  5. Step 5: Solve for x
    x = 267,821,265.96/18,841.01
  6. Step 6: Final answer
    x = 14,214.81

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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.