Home / 19,139.04-28,709.10-5,288.04

Finding the Fourth Proportional to 19,139.04, 28,709.10 and 5,288.04

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Solution

The fourth proportional to 19,139.04, 28,709.10 and 5,288.04 is: 7,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.04 : 28,709.10 = 5,288.04 : x
  2. Step 2: Convert to fraction form
    19,139.04/28,709.10 = 5,288.04/x
  3. Step 3: Cross multiply
    19,139.04x = 28,709.10 × 5,288.04
  4. Step 4: Simplify right side
    19,139.04x = 151,814,869.16
  5. Step 5: Solve for x
    x = 151,814,869.16/19,139.04
  6. Step 6: Final answer
    x = 7,932.21

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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.