Home / 13,381.28-20,071.92-5,585.84

Finding the Fourth Proportional to 13,381.28, 20,071.92 and 5,585.84

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Solution

The fourth proportional to 13,381.28, 20,071.92 and 5,585.84 is: 8,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.28 : 20,071.92 = 5,585.84 : x
  2. Step 2: Convert to fraction form
    13,381.28/20,071.92 = 5,585.84/x
  3. Step 3: Cross multiply
    13,381.28x = 20,071.92 × 5,585.84
  4. Step 4: Simplify right side
    13,381.28x = 112,118,533.61
  5. Step 5: Solve for x
    x = 112,118,533.61/13,381.28
  6. Step 6: Final answer
    x = 8,378.76

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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.