Home / 19,140.12-28,711.40-5,099.92

Finding the Fourth Proportional to 19,140.12, 28,711.40 and 5,099.92

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Solution

The fourth proportional to 19,140.12, 28,711.40 and 5,099.92 is: 7,650.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.12 : 28,711.40 = 5,099.92 : x
  2. Step 2: Convert to fraction form
    19,140.12/28,711.40 = 5,099.92/x
  3. Step 3: Cross multiply
    19,140.12x = 28,711.40 × 5,099.92
  4. Step 4: Simplify right side
    19,140.12x = 146,425,843.09
  5. Step 5: Solve for x
    x = 146,425,843.09/19,140.12
  6. Step 6: Final answer
    x = 7,650.21

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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.