Home / 13,543.35-20,312.09-3,682.72

Finding the Fourth Proportional to 13,543.35, 20,312.09 and 3,682.72

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Solution

The fourth proportional to 13,543.35, 20,312.09 and 3,682.72 is: 5,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.35 : 20,312.09 = 3,682.72 : x
  2. Step 2: Convert to fraction form
    13,543.35/20,312.09 = 3,682.72/x
  3. Step 3: Cross multiply
    13,543.35x = 20,312.09 × 3,682.72
  4. Step 4: Simplify right side
    13,543.35x = 74,803,740.08
  5. Step 5: Solve for x
    x = 74,803,740.08/13,543.35
  6. Step 6: Final answer
    x = 5,523.28

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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.