Home / 14,206.10-21,170.66-13,778.55

Finding the Fourth Proportional to 14,206.10, 21,170.66 and 13,778.55

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Solution

The fourth proportional to 14,206.10, 21,170.66 and 13,778.55 is: 20,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,206.10 : 21,170.66 = 13,778.55 : x
  2. Step 2: Convert to fraction form
    14,206.10/21,170.66 = 13,778.55/x
  3. Step 3: Cross multiply
    14,206.10x = 21,170.66 × 13,778.55
  4. Step 4: Simplify right side
    14,206.10x = 291,700,928.45
  5. Step 5: Solve for x
    x = 291,700,928.45/14,206.10
  6. Step 6: Final answer
    x = 20,533.51

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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.