Home / 13,403.28-20,117.04-7,168.56

Finding the Fourth Proportional to 13,403.28, 20,117.04 and 7,168.56

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Solution

The fourth proportional to 13,403.28, 20,117.04 and 7,168.56 is: 10,759.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.28 : 20,117.04 = 7,168.56 : x
  2. Step 2: Convert to fraction form
    13,403.28/20,117.04 = 7,168.56/x
  3. Step 3: Cross multiply
    13,403.28x = 20,117.04 × 7,168.56
  4. Step 4: Simplify right side
    13,403.28x = 144,210,208.26
  5. Step 5: Solve for x
    x = 144,210,208.26/13,403.28
  6. Step 6: Final answer
    x = 10,759.32

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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.