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Finding the Fourth Proportional to 27,203.36, 40,720.24 and 20,947.12

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Solution

The fourth proportional to 27,203.36, 40,720.24 and 20,947.12 is: 31,355.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,203.36 : 40,720.24 = 20,947.12 : x
  2. Step 2: Convert to fraction form
    27,203.36/40,720.24 = 20,947.12/x
  3. Step 3: Cross multiply
    27,203.36x = 40,720.24 × 20,947.12
  4. Step 4: Simplify right side
    27,203.36x = 852,971,753.71
  5. Step 5: Solve for x
    x = 852,971,753.71/27,203.36
  6. Step 6: Final answer
    x = 31,355.38

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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.