Home / 28,330.86-42,495.25-11,678.39

Finding the Fourth Proportional to 28,330.86, 42,495.25 and 11,678.39

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Solution

The fourth proportional to 28,330.86, 42,495.25 and 11,678.39 is: 17,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.86 : 42,495.25 = 11,678.39 : x
  2. Step 2: Convert to fraction form
    28,330.86/42,495.25 = 11,678.39/x
  3. Step 3: Cross multiply
    28,330.86x = 42,495.25 × 11,678.39
  4. Step 4: Simplify right side
    28,330.86x = 496,276,281.27
  5. Step 5: Solve for x
    x = 496,276,281.27/28,330.86
  6. Step 6: Final answer
    x = 17,517.16

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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.