Home / 10,900.87-15,043.70-6,424.81

Finding the Fourth Proportional to 10,900.87, 15,043.70 and 6,424.81

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Solution

The fourth proportional to 10,900.87, 15,043.70 and 6,424.81 is: 8,866.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.87 : 15,043.70 = 6,424.81 : x
  2. Step 2: Convert to fraction form
    10,900.87/15,043.70 = 6,424.81/x
  3. Step 3: Cross multiply
    10,900.87x = 15,043.70 × 6,424.81
  4. Step 4: Simplify right side
    10,900.87x = 96,652,844.46
  5. Step 5: Solve for x
    x = 96,652,844.46/10,900.87
  6. Step 6: Final answer
    x = 8,866.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.