Home / 20,802.67-28,703.70-11,849.98

Finding the Fourth Proportional to 20,802.67, 28,703.70 and 11,849.98

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Solution

The fourth proportional to 20,802.67, 28,703.70 and 11,849.98 is: 16,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.67 : 28,703.70 = 11,849.98 : x
  2. Step 2: Convert to fraction form
    20,802.67/28,703.70 = 11,849.98/x
  3. Step 3: Cross multiply
    20,802.67x = 28,703.70 × 11,849.98
  4. Step 4: Simplify right side
    20,802.67x = 340,138,270.93
  5. Step 5: Solve for x
    x = 340,138,270.93/20,802.67
  6. Step 6: Final answer
    x = 16,350.70

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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.