Home / 28,233.12-42,356.61-19,929.36

Finding the Fourth Proportional to 28,233.12, 42,356.61 and 19,929.36

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Solution

The fourth proportional to 28,233.12, 42,356.61 and 19,929.36 is: 29,898.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.12 : 42,356.61 = 19,929.36 : x
  2. Step 2: Convert to fraction form
    28,233.12/42,356.61 = 19,929.36/x
  3. Step 3: Cross multiply
    28,233.12x = 42,356.61 × 19,929.36
  4. Step 4: Simplify right side
    28,233.12x = 844,140,129.07
  5. Step 5: Solve for x
    x = 844,140,129.07/28,233.12
  6. Step 6: Final answer
    x = 29,898.93

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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.