Home / 36,987.79-51,040.59-20,855.68

Finding the Fourth Proportional to 36,987.79, 51,040.59 and 20,855.68

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Solution

The fourth proportional to 36,987.79, 51,040.59 and 20,855.68 is: 28,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987.79 : 51,040.59 = 20,855.68 : x
  2. Step 2: Convert to fraction form
    36,987.79/51,040.59 = 20,855.68/x
  3. Step 3: Cross multiply
    36,987.79x = 51,040.59 × 20,855.68
  4. Step 4: Simplify right side
    36,987.79x = 1,064,486,212.05
  5. Step 5: Solve for x
    x = 1,064,486,212.05/36,987.79
  6. Step 6: Final answer
    x = 28,779.39

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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.