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Finding the Fourth Proportional to 18,983.13, 28,476.11 and 7,296.45

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Solution

The fourth proportional to 18,983.13, 28,476.11 and 7,296.45 is: 10,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.13 : 28,476.11 = 7,296.45 : x
  2. Step 2: Convert to fraction form
    18,983.13/28,476.11 = 7,296.45/x
  3. Step 3: Cross multiply
    18,983.13x = 28,476.11 × 7,296.45
  4. Step 4: Simplify right side
    18,983.13x = 207,774,512.81
  5. Step 5: Solve for x
    x = 207,774,512.81/18,983.13
  6. Step 6: Final answer
    x = 10,945.22

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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.