Home / 20,503.92-28,297.50-12,551.40

Finding the Fourth Proportional to 20,503.92, 28,297.50 and 12,551.40

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Solution

The fourth proportional to 20,503.92, 28,297.50 and 12,551.40 is: 17,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.92 : 28,297.50 = 12,551.40 : x
  2. Step 2: Convert to fraction form
    20,503.92/28,297.50 = 12,551.40/x
  3. Step 3: Cross multiply
    20,503.92x = 28,297.50 × 12,551.40
  4. Step 4: Simplify right side
    20,503.92x = 355,173,241.50
  5. Step 5: Solve for x
    x = 355,173,241.50/20,503.92
  6. Step 6: Final answer
    x = 17,322.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.