Home / 20,359.48-28,095.30-11,406.53

Finding the Fourth Proportional to 20,359.48, 28,095.30 and 11,406.53

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Solution

The fourth proportional to 20,359.48, 28,095.30 and 11,406.53 is: 15,740.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.48 : 28,095.30 = 11,406.53 : x
  2. Step 2: Convert to fraction form
    20,359.48/28,095.30 = 11,406.53/x
  3. Step 3: Cross multiply
    20,359.48x = 28,095.30 × 11,406.53
  4. Step 4: Simplify right side
    20,359.48x = 320,469,684.80
  5. Step 5: Solve for x
    x = 320,469,684.80/20,359.48
  6. Step 6: Final answer
    x = 15,740.57

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1.5x scale

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.