Home / 13,430.28-20,145.51-4,071.02

Finding the Fourth Proportional to 13,430.28, 20,145.51 and 4,071.02

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Solution

The fourth proportional to 13,430.28, 20,145.51 and 4,071.02 is: 6,106.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.28 : 20,145.51 = 4,071.02 : x
  2. Step 2: Convert to fraction form
    13,430.28/20,145.51 = 4,071.02/x
  3. Step 3: Cross multiply
    13,430.28x = 20,145.51 × 4,071.02
  4. Step 4: Simplify right side
    13,430.28x = 82,012,824.48
  5. Step 5: Solve for x
    x = 82,012,824.48/13,430.28
  6. Step 6: Final answer
    x = 6,106.56

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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.