Home / 13,651.81-20,451.45-8,371.40

Finding the Fourth Proportional to 13,651.81, 20,451.45 and 8,371.40

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Solution

The fourth proportional to 13,651.81, 20,451.45 and 8,371.40 is: 12,541.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.81 : 20,451.45 = 8,371.40 : x
  2. Step 2: Convert to fraction form
    13,651.81/20,451.45 = 8,371.40/x
  3. Step 3: Cross multiply
    13,651.81x = 20,451.45 × 8,371.40
  4. Step 4: Simplify right side
    13,651.81x = 171,207,319.66
  5. Step 5: Solve for x
    x = 171,207,319.66/13,651.81
  6. Step 6: Final answer
    x = 12,541.00

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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.