Home / 13,700.57-20,550.78-3,312.32

Finding the Fourth Proportional to 13,700.57, 20,550.78 and 3,312.32

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Solution

The fourth proportional to 13,700.57, 20,550.78 and 3,312.32 is: 4,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.57 : 20,550.78 = 3,312.32 : x
  2. Step 2: Convert to fraction form
    13,700.57/20,550.78 = 3,312.32/x
  3. Step 3: Cross multiply
    13,700.57x = 20,550.78 × 3,312.32
  4. Step 4: Simplify right side
    13,700.57x = 68,070,656.86
  5. Step 5: Solve for x
    x = 68,070,656.86/13,700.57
  6. Step 6: Final answer
    x = 4,968.46

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Similar ratio
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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.