Home / 19,288.24-28,929.76-5,438.32

Finding the Fourth Proportional to 19,288.24, 28,929.76 and 5,438.32

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Solution

The fourth proportional to 19,288.24, 28,929.76 and 5,438.32 is: 8,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.24 : 28,929.76 = 5,438.32 : x
  2. Step 2: Convert to fraction form
    19,288.24/28,929.76 = 5,438.32/x
  3. Step 3: Cross multiply
    19,288.24x = 28,929.76 × 5,438.32
  4. Step 4: Simplify right side
    19,288.24x = 157,329,292.40
  5. Step 5: Solve for x
    x = 157,329,292.40/19,288.24
  6. Step 6: Final answer
    x = 8,156.75

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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.