Home / 13,955.22-20,931.21-5,189.13

Finding the Fourth Proportional to 13,955.22, 20,931.21 and 5,189.13

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Solution

The fourth proportional to 13,955.22, 20,931.21 and 5,189.13 is: 7,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.22 : 20,931.21 = 5,189.13 : x
  2. Step 2: Convert to fraction form
    13,955.22/20,931.21 = 5,189.13/x
  3. Step 3: Cross multiply
    13,955.22x = 20,931.21 × 5,189.13
  4. Step 4: Simplify right side
    13,955.22x = 108,614,769.75
  5. Step 5: Solve for x
    x = 108,614,769.75/13,955.22
  6. Step 6: Final answer
    x = 7,783.09

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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.