Home / 20,245.90-27,952.35-12,702.58

Finding the Fourth Proportional to 20,245.90, 27,952.35 and 12,702.58

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Solution

The fourth proportional to 20,245.90, 27,952.35 and 12,702.58 is: 17,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.90 : 27,952.35 = 12,702.58 : x
  2. Step 2: Convert to fraction form
    20,245.90/27,952.35 = 12,702.58/x
  3. Step 3: Cross multiply
    20,245.90x = 27,952.35 × 12,702.58
  4. Step 4: Simplify right side
    20,245.90x = 355,066,962.06
  5. Step 5: Solve for x
    x = 355,066,962.06/20,245.90
  6. Step 6: Final answer
    x = 17,537.72

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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.