Home / 19,141.20-28,700.04-7,440.78

Finding the Fourth Proportional to 19,141.20, 28,700.04 and 7,440.78

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Solution

The fourth proportional to 19,141.20, 28,700.04 and 7,440.78 is: 11,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,141.20 : 28,700.04 = 7,440.78 : x
  2. Step 2: Convert to fraction form
    19,141.20/28,700.04 = 7,440.78/x
  3. Step 3: Cross multiply
    19,141.20x = 28,700.04 × 7,440.78
  4. Step 4: Simplify right side
    19,141.20x = 213,550,683.63
  5. Step 5: Solve for x
    x = 213,550,683.63/19,141.20
  6. Step 6: Final answer
    x = 11,156.60

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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.