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Finding the Fourth Proportional to 13,703.74, 20,555.71 and 4,343.58

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Solution

The fourth proportional to 13,703.74, 20,555.71 and 4,343.58 is: 6,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.74 : 20,555.71 = 4,343.58 : x
  2. Step 2: Convert to fraction form
    13,703.74/20,555.71 = 4,343.58/x
  3. Step 3: Cross multiply
    13,703.74x = 20,555.71 × 4,343.58
  4. Step 4: Simplify right side
    13,703.74x = 89,285,370.84
  5. Step 5: Solve for x
    x = 89,285,370.84/13,703.74
  6. Step 6: Final answer
    x = 6,515.40

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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.