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Finding the Fourth Proportional to 18,998.13, 28,497.16 and 4,958.10

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Solution

The fourth proportional to 18,998.13, 28,497.16 and 4,958.10 is: 7,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.13 : 28,497.16 = 4,958.10 : x
  2. Step 2: Convert to fraction form
    18,998.13/28,497.16 = 4,958.10/x
  3. Step 3: Cross multiply
    18,998.13x = 28,497.16 × 4,958.10
  4. Step 4: Simplify right side
    18,998.13x = 141,291,769.00
  5. Step 5: Solve for x
    x = 141,291,769.00/18,998.13
  6. Step 6: Final answer
    x = 7,437.14

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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.