Home / 20,835.07-28,752.87-11,403.66

Finding the Fourth Proportional to 20,835.07, 28,752.87 and 11,403.66

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Solution

The fourth proportional to 20,835.07, 28,752.87 and 11,403.66 is: 15,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.07 : 28,752.87 = 11,403.66 : x
  2. Step 2: Convert to fraction form
    20,835.07/28,752.87 = 11,403.66/x
  3. Step 3: Cross multiply
    20,835.07x = 28,752.87 × 11,403.66
  4. Step 4: Simplify right side
    20,835.07x = 327,887,953.50
  5. Step 5: Solve for x
    x = 327,887,953.50/20,835.07
  6. Step 6: Final answer
    x = 15,737.31

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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.