Home / 10,371.30-15,544.80-5,438.40

Finding the Fourth Proportional to 10,371.30, 15,544.80 and 5,438.40

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Solution

The fourth proportional to 10,371.30, 15,544.80 and 5,438.40 is: 8,151.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.30 : 15,544.80 = 5,438.40 : x
  2. Step 2: Convert to fraction form
    10,371.30/15,544.80 = 5,438.40/x
  3. Step 3: Cross multiply
    10,371.30x = 15,544.80 × 5,438.40
  4. Step 4: Simplify right side
    10,371.30x = 84,538,840.32
  5. Step 5: Solve for x
    x = 84,538,840.32/10,371.30
  6. Step 6: Final answer
    x = 8,151.23

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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.