Home / 13,622.19-20,432.72-4,739.55

Finding the Fourth Proportional to 13,622.19, 20,432.72 and 4,739.55

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Solution

The fourth proportional to 13,622.19, 20,432.72 and 4,739.55 is: 7,109.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.19 : 20,432.72 = 4,739.55 : x
  2. Step 2: Convert to fraction form
    13,622.19/20,432.72 = 4,739.55/x
  3. Step 3: Cross multiply
    13,622.19x = 20,432.72 × 4,739.55
  4. Step 4: Simplify right side
    13,622.19x = 96,841,858.84
  5. Step 5: Solve for x
    x = 96,841,858.84/13,622.19
  6. Step 6: Final answer
    x = 7,109.13

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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.