Home / 13,560.40-20,309.01-13,186.69

Finding the Fourth Proportional to 13,560.40, 20,309.01 and 13,186.69

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Solution

The fourth proportional to 13,560.40, 20,309.01 and 13,186.69 is: 19,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.40 : 20,309.01 = 13,186.69 : x
  2. Step 2: Convert to fraction form
    13,560.40/20,309.01 = 13,186.69/x
  3. Step 3: Cross multiply
    13,560.40x = 20,309.01 × 13,186.69
  4. Step 4: Simplify right side
    13,560.40x = 267,808,619.08
  5. Step 5: Solve for x
    x = 267,808,619.08/13,560.40
  6. Step 6: Final answer
    x = 19,749.32

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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.