Home / 13,731.74-18,948.93-7,763.66

Finding the Fourth Proportional to 13,731.74, 18,948.93 and 7,763.66

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Solution

The fourth proportional to 13,731.74, 18,948.93 and 7,763.66 is: 10,713.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.74 : 18,948.93 = 7,763.66 : x
  2. Step 2: Convert to fraction form
    13,731.74/18,948.93 = 7,763.66/x
  3. Step 3: Cross multiply
    13,731.74x = 18,948.93 × 7,763.66
  4. Step 4: Simplify right side
    13,731.74x = 147,113,049.88
  5. Step 5: Solve for x
    x = 147,113,049.88/13,731.74
  6. Step 6: Final answer
    x = 10,713.36

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1.5x scale

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.