Home / 13,731.04-18,947.72-7,763.28

Finding the Fourth Proportional to 13,731.04, 18,947.72 and 7,763.28

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Solution

The fourth proportional to 13,731.04, 18,947.72 and 7,763.28 is: 10,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.04 : 18,947.72 = 7,763.28 : x
  2. Step 2: Convert to fraction form
    13,731.04/18,947.72 = 7,763.28/x
  3. Step 3: Cross multiply
    13,731.04x = 18,947.72 × 7,763.28
  4. Step 4: Simplify right side
    13,731.04x = 147,096,455.72
  5. Step 5: Solve for x
    x = 147,096,455.72/13,731.04
  6. Step 6: Final answer
    x = 10,712.70

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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.