Home / 13,756.83-20,638.32-4,991.55

Finding the Fourth Proportional to 13,756.83, 20,638.32 and 4,991.55

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Solution

The fourth proportional to 13,756.83, 20,638.32 and 4,991.55 is: 7,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.83 : 20,638.32 = 4,991.55 : x
  2. Step 2: Convert to fraction form
    13,756.83/20,638.32 = 4,991.55/x
  3. Step 3: Cross multiply
    13,756.83x = 20,638.32 × 4,991.55
  4. Step 4: Simplify right side
    13,756.83x = 103,017,206.20
  5. Step 5: Solve for x
    x = 103,017,206.20/13,756.83
  6. Step 6: Final answer
    x = 7,488.44

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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.