Home / 18,669.76-28,009.08-5,342.95

Finding the Fourth Proportional to 18,669.76, 28,009.08 and 5,342.95

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Solution

The fourth proportional to 18,669.76, 28,009.08 and 5,342.95 is: 8,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.76 : 28,009.08 = 5,342.95 : x
  2. Step 2: Convert to fraction form
    18,669.76/28,009.08 = 5,342.95/x
  3. Step 3: Cross multiply
    18,669.76x = 28,009.08 × 5,342.95
  4. Step 4: Simplify right side
    18,669.76x = 149,651,113.99
  5. Step 5: Solve for x
    x = 149,651,113.99/18,669.76
  6. Step 6: Final answer
    x = 8,015.70

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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.