Home / 10,659.16-15,979.70-4,415.28

Finding the Fourth Proportional to 10,659.16, 15,979.70 and 4,415.28

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Solution

The fourth proportional to 10,659.16, 15,979.70 and 4,415.28 is: 6,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.16 : 15,979.70 = 4,415.28 : x
  2. Step 2: Convert to fraction form
    10,659.16/15,979.70 = 4,415.28/x
  3. Step 3: Cross multiply
    10,659.16x = 15,979.70 × 4,415.28
  4. Step 4: Simplify right side
    10,659.16x = 70,554,776.09
  5. Step 5: Solve for x
    x = 70,554,776.09/10,659.16
  6. Step 6: Final answer
    x = 6,619.17

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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.