Home / 20,901.95-28,845.18-11,470.50

Finding the Fourth Proportional to 20,901.95, 28,845.18 and 11,470.50

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Solution

The fourth proportional to 20,901.95, 28,845.18 and 11,470.50 is: 15,829.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.95 : 28,845.18 = 11,470.50 : x
  2. Step 2: Convert to fraction form
    20,901.95/28,845.18 = 11,470.50/x
  3. Step 3: Cross multiply
    20,901.95x = 28,845.18 × 11,470.50
  4. Step 4: Simplify right side
    20,901.95x = 330,868,637.19
  5. Step 5: Solve for x
    x = 330,868,637.19/20,901.95
  6. Step 6: Final answer
    x = 15,829.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.