Home / 30,143.04-45,209.40-7,956.66

Finding the Fourth Proportional to 30,143.04, 45,209.40 and 7,956.66

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Solution

The fourth proportional to 30,143.04, 45,209.40 and 7,956.66 is: 11,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,143.04 : 45,209.40 = 7,956.66 : x
  2. Step 2: Convert to fraction form
    30,143.04/45,209.40 = 7,956.66/x
  3. Step 3: Cross multiply
    30,143.04x = 45,209.40 × 7,956.66
  4. Step 4: Simplify right side
    30,143.04x = 359,715,824.60
  5. Step 5: Solve for x
    x = 359,715,824.60/30,143.04
  6. Step 6: Final answer
    x = 11,933.63

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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.