Home / 13,761.23-20,615.31-8,219.00

Finding the Fourth Proportional to 13,761.23, 20,615.31 and 8,219.00

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Solution

The fourth proportional to 13,761.23, 20,615.31 and 8,219.00 is: 12,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.23 : 20,615.31 = 8,219.00 : x
  2. Step 2: Convert to fraction form
    13,761.23/20,615.31 = 8,219.00/x
  3. Step 3: Cross multiply
    13,761.23x = 20,615.31 × 8,219.00
  4. Step 4: Simplify right side
    13,761.23x = 169,437,284.43
  5. Step 5: Solve for x
    x = 169,437,284.43/13,761.23
  6. Step 6: Final answer
    x = 12,312.66

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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.