Home / 43,779.98-65,663.44-12,186.74

Finding the Fourth Proportional to 43,779.98, 65,663.44 and 12,186.74

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Solution

The fourth proportional to 43,779.98, 65,663.44 and 12,186.74 is: 18,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,779.98 : 65,663.44 = 12,186.74 : x
  2. Step 2: Convert to fraction form
    43,779.98/65,663.44 = 12,186.74/x
  3. Step 3: Cross multiply
    43,779.98x = 65,663.44 × 12,186.74
  4. Step 4: Simplify right side
    43,779.98x = 800,223,270.79
  5. Step 5: Solve for x
    x = 800,223,270.79/43,779.98
  6. Step 6: Final answer
    x = 18,278.29

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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.