Home / 20,702.09-28,515.57-16,217.93

Finding the Fourth Proportional to 20,702.09, 28,515.57 and 16,217.93

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Solution

The fourth proportional to 20,702.09, 28,515.57 and 16,217.93 is: 22,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.09 : 28,515.57 = 16,217.93 : x
  2. Step 2: Convert to fraction form
    20,702.09/28,515.57 = 16,217.93/x
  3. Step 3: Cross multiply
    20,702.09x = 28,515.57 × 16,217.93
  4. Step 4: Simplify right side
    20,702.09x = 462,463,518.17
  5. Step 5: Solve for x
    x = 462,463,518.17/20,702.09
  6. Step 6: Final answer
    x = 22,338.98

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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.