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Finding the Fourth Proportional to 20,703.92, 30,878.98 and 17,604.32

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Solution

The fourth proportional to 20,703.92, 30,878.98 and 17,604.32 is: 26,256.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.92 : 30,878.98 = 17,604.32 : x
  2. Step 2: Convert to fraction form
    20,703.92/30,878.98 = 17,604.32/x
  3. Step 3: Cross multiply
    20,703.92x = 30,878.98 × 17,604.32
  4. Step 4: Simplify right side
    20,703.92x = 543,603,445.19
  5. Step 5: Solve for x
    x = 543,603,445.19/20,703.92
  6. Step 6: Final answer
    x = 26,256.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.