Home / 13,340.13-20,023.16-6,419.49

Finding the Fourth Proportional to 13,340.13, 20,023.16 and 6,419.49

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Solution

The fourth proportional to 13,340.13, 20,023.16 and 6,419.49 is: 9,635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.13 : 20,023.16 = 6,419.49 : x
  2. Step 2: Convert to fraction form
    13,340.13/20,023.16 = 6,419.49/x
  3. Step 3: Cross multiply
    13,340.13x = 20,023.16 × 6,419.49
  4. Step 4: Simplify right side
    13,340.13x = 128,538,443.29
  5. Step 5: Solve for x
    x = 128,538,443.29/13,340.13
  6. Step 6: Final answer
    x = 9,635.47

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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.