Home / 20,323.98-28,045.77-11,369.94

Finding the Fourth Proportional to 20,323.98, 28,045.77 and 11,369.94

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Solution

The fourth proportional to 20,323.98, 28,045.77 and 11,369.94 is: 15,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,323.98 : 28,045.77 = 11,369.94 : x
  2. Step 2: Convert to fraction form
    20,323.98/28,045.77 = 11,369.94/x
  3. Step 3: Cross multiply
    20,323.98x = 28,045.77 × 11,369.94
  4. Step 4: Simplify right side
    20,323.98x = 318,878,722.15
  5. Step 5: Solve for x
    x = 318,878,722.15/20,323.98
  6. Step 6: Final answer
    x = 15,689.78

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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.