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Finding the Fourth Proportional to 18,883.92, 28,322.04 and 17,947.20

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Solution

The fourth proportional to 18,883.92, 28,322.04 and 17,947.20 is: 26,917.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.92 : 28,322.04 = 17,947.20 : x
  2. Step 2: Convert to fraction form
    18,883.92/28,322.04 = 17,947.20/x
  3. Step 3: Cross multiply
    18,883.92x = 28,322.04 × 17,947.20
  4. Step 4: Simplify right side
    18,883.92x = 508,301,316.29
  5. Step 5: Solve for x
    x = 508,301,316.29/18,883.92
  6. Step 6: Final answer
    x = 26,917.15

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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.