Home / 10,557.76-15,838.80-3,631.36

Finding the Fourth Proportional to 10,557.76, 15,838.80 and 3,631.36

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Solution

The fourth proportional to 10,557.76, 15,838.80 and 3,631.36 is: 5,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,557.76 : 15,838.80 = 3,631.36 : x
  2. Step 2: Convert to fraction form
    10,557.76/15,838.80 = 3,631.36/x
  3. Step 3: Cross multiply
    10,557.76x = 15,838.80 × 3,631.36
  4. Step 4: Simplify right side
    10,557.76x = 57,516,384.77
  5. Step 5: Solve for x
    x = 57,516,384.77/10,557.76
  6. Step 6: Final answer
    x = 5,447.78

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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.