Home / 30,589.32-45,856.80-10,865.28

Finding the Fourth Proportional to 30,589.32, 45,856.80 and 10,865.28

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Solution

The fourth proportional to 30,589.32, 45,856.80 and 10,865.28 is: 16,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.32 : 45,856.80 = 10,865.28 : x
  2. Step 2: Convert to fraction form
    30,589.32/45,856.80 = 10,865.28/x
  3. Step 3: Cross multiply
    30,589.32x = 45,856.80 × 10,865.28
  4. Step 4: Simplify right side
    30,589.32x = 498,246,971.90
  5. Step 5: Solve for x
    x = 498,246,971.90/30,589.32
  6. Step 6: Final answer
    x = 16,288.27

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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.