Home / 13,415.04-20,119.90-6,749.76

Finding the Fourth Proportional to 13,415.04, 20,119.90 and 6,749.76

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Solution

The fourth proportional to 13,415.04, 20,119.90 and 6,749.76 is: 10,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.04 : 20,119.90 = 6,749.76 : x
  2. Step 2: Convert to fraction form
    13,415.04/20,119.90 = 6,749.76/x
  3. Step 3: Cross multiply
    13,415.04x = 20,119.90 × 6,749.76
  4. Step 4: Simplify right side
    13,415.04x = 135,804,496.22
  5. Step 5: Solve for x
    x = 135,804,496.22/13,415.04
  6. Step 6: Final answer
    x = 10,123.30

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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.