Home / 10,285.47-15,427.89-2,889.81

Finding the Fourth Proportional to 10,285.47, 15,427.89 and 2,889.81

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Solution

The fourth proportional to 10,285.47, 15,427.89 and 2,889.81 is: 4,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.47 : 15,427.89 = 2,889.81 : x
  2. Step 2: Convert to fraction form
    10,285.47/15,427.89 = 2,889.81/x
  3. Step 3: Cross multiply
    10,285.47x = 15,427.89 × 2,889.81
  4. Step 4: Simplify right side
    10,285.47x = 44,583,670.80
  5. Step 5: Solve for x
    x = 44,583,670.80/10,285.47
  6. Step 6: Final answer
    x = 4,334.63

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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.