Home / 10,619.86-15,929.88-3,689.50

Finding the Fourth Proportional to 10,619.86, 15,929.88 and 3,689.50

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Solution

The fourth proportional to 10,619.86, 15,929.88 and 3,689.50 is: 5,534.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,619.86 : 15,929.88 = 3,689.50 : x
  2. Step 2: Convert to fraction form
    10,619.86/15,929.88 = 3,689.50/x
  3. Step 3: Cross multiply
    10,619.86x = 15,929.88 × 3,689.50
  4. Step 4: Simplify right side
    10,619.86x = 58,773,292.26
  5. Step 5: Solve for x
    x = 58,773,292.26/10,619.86
  6. Step 6: Final answer
    x = 5,534.28

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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.