Home / 10,665.26-15,991.03-4,429.57

Finding the Fourth Proportional to 10,665.26, 15,991.03 and 4,429.57

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Solution

The fourth proportional to 10,665.26, 15,991.03 and 4,429.57 is: 6,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.26 : 15,991.03 = 4,429.57 : x
  2. Step 2: Convert to fraction form
    10,665.26/15,991.03 = 4,429.57/x
  3. Step 3: Cross multiply
    10,665.26x = 15,991.03 × 4,429.57
  4. Step 4: Simplify right side
    10,665.26x = 70,833,335.71
  5. Step 5: Solve for x
    x = 70,833,335.71/10,665.26
  6. Step 6: Final answer
    x = 6,641.50

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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.