Home / 12,720.44-17,555.27-7,056.96

Finding the Fourth Proportional to 12,720.44, 17,555.27 and 7,056.96

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Solution

The fourth proportional to 12,720.44, 17,555.27 and 7,056.96 is: 9,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.44 : 17,555.27 = 7,056.96 : x
  2. Step 2: Convert to fraction form
    12,720.44/17,555.27 = 7,056.96/x
  3. Step 3: Cross multiply
    12,720.44x = 17,555.27 × 7,056.96
  4. Step 4: Simplify right side
    12,720.44x = 123,886,838.18
  5. Step 5: Solve for x
    x = 123,886,838.18/12,720.44
  6. Step 6: Final answer
    x = 9,739.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.