Home / 43,590.30-65,385.45-12,425.55

Finding the Fourth Proportional to 43,590.30, 65,385.45 and 12,425.55

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Solution

The fourth proportional to 43,590.30, 65,385.45 and 12,425.55 is: 18,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,590.30 : 65,385.45 = 12,425.55 : x
  2. Step 2: Convert to fraction form
    43,590.30/65,385.45 = 12,425.55/x
  3. Step 3: Cross multiply
    43,590.30x = 65,385.45 × 12,425.55
  4. Step 4: Simplify right side
    43,590.30x = 812,450,178.25
  5. Step 5: Solve for x
    x = 812,450,178.25/43,590.30
  6. Step 6: Final answer
    x = 18,638.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.