Home / 36,987.29-51,039.90-20,855.18

Finding the Fourth Proportional to 36,987.29, 51,039.90 and 20,855.18

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Solution

The fourth proportional to 36,987.29, 51,039.90 and 20,855.18 is: 28,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987.29 : 51,039.90 = 20,855.18 : x
  2. Step 2: Convert to fraction form
    36,987.29/51,039.90 = 20,855.18/x
  3. Step 3: Cross multiply
    36,987.29x = 51,039.90 × 20,855.18
  4. Step 4: Simplify right side
    36,987.29x = 1,064,446,301.68
  5. Step 5: Solve for x
    x = 1,064,446,301.68/36,987.29
  6. Step 6: Final answer
    x = 28,778.70

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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.