Home / 37,779.42-52,137.35-21,860.78

Finding the Fourth Proportional to 37,779.42, 52,137.35 and 21,860.78

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Solution

The fourth proportional to 37,779.42, 52,137.35 and 21,860.78 is: 30,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,779.42 : 52,137.35 = 21,860.78 : x
  2. Step 2: Convert to fraction form
    37,779.42/52,137.35 = 21,860.78/x
  3. Step 3: Cross multiply
    37,779.42x = 52,137.35 × 21,860.78
  4. Step 4: Simplify right side
    37,779.42x = 1,139,763,138.13
  5. Step 5: Solve for x
    x = 1,139,763,138.13/37,779.42
  6. Step 6: Final answer
    x = 30,168.89

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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.