Home / 13,988.28-20,993.94-7,064.76

Finding the Fourth Proportional to 13,988.28, 20,993.94 and 7,064.76

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Solution

The fourth proportional to 13,988.28, 20,993.94 and 7,064.76 is: 10,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.28 : 20,993.94 = 7,064.76 : x
  2. Step 2: Convert to fraction form
    13,988.28/20,993.94 = 7,064.76/x
  3. Step 3: Cross multiply
    13,988.28x = 20,993.94 × 7,064.76
  4. Step 4: Simplify right side
    13,988.28x = 148,317,147.55
  5. Step 5: Solve for x
    x = 148,317,147.55/13,988.28
  6. Step 6: Final answer
    x = 10,602.96

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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.