Home / 19,611.18-29,420.04-7,131.84

Finding the Fourth Proportional to 19,611.18, 29,420.04 and 7,131.84

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Solution

The fourth proportional to 19,611.18, 29,420.04 and 7,131.84 is: 10,698.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.18 : 29,420.04 = 7,131.84 : x
  2. Step 2: Convert to fraction form
    19,611.18/29,420.04 = 7,131.84/x
  3. Step 3: Cross multiply
    19,611.18x = 29,420.04 × 7,131.84
  4. Step 4: Simplify right side
    19,611.18x = 209,819,018.07
  5. Step 5: Solve for x
    x = 209,819,018.07/19,611.18
  6. Step 6: Final answer
    x = 10,698.95

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1.5x scale

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.