Home / 13,731.76-18,950.80-7,763.98

Finding the Fourth Proportional to 13,731.76, 18,950.80 and 7,763.98

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Solution

The fourth proportional to 13,731.76, 18,950.80 and 7,763.98 is: 10,714.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.76 : 18,950.80 = 7,763.98 : x
  2. Step 2: Convert to fraction form
    13,731.76/18,950.80 = 7,763.98/x
  3. Step 3: Cross multiply
    13,731.76x = 18,950.80 × 7,763.98
  4. Step 4: Simplify right side
    13,731.76x = 147,133,632.18
  5. Step 5: Solve for x
    x = 147,133,632.18/13,731.76
  6. Step 6: Final answer
    x = 10,714.84

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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.