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Finding the Fourth Proportional to 13,371.40, 20,057.10 and 6,810.40

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Solution

The fourth proportional to 13,371.40, 20,057.10 and 6,810.40 is: 10,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.40 : 20,057.10 = 6,810.40 : x
  2. Step 2: Convert to fraction form
    13,371.40/20,057.10 = 6,810.40/x
  3. Step 3: Cross multiply
    13,371.40x = 20,057.10 × 6,810.40
  4. Step 4: Simplify right side
    13,371.40x = 136,596,873.84
  5. Step 5: Solve for x
    x = 136,596,873.84/13,371.40
  6. Step 6: Final answer
    x = 10,215.60

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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.