Home / 28,104.86-42,178.08-13,313.82

Finding the Fourth Proportional to 28,104.86, 42,178.08 and 13,313.82

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Solution

The fourth proportional to 28,104.86, 42,178.08 and 13,313.82 is: 19,980.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.86 : 42,178.08 = 13,313.82 : x
  2. Step 2: Convert to fraction form
    28,104.86/42,178.08 = 13,313.82/x
  3. Step 3: Cross multiply
    28,104.86x = 42,178.08 × 13,313.82
  4. Step 4: Simplify right side
    28,104.86x = 561,551,365.07
  5. Step 5: Solve for x
    x = 561,551,365.07/28,104.86
  6. Step 6: Final answer
    x = 19,980.58

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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.