Home / 20,435.88-30,637.53-18,795.72

Finding the Fourth Proportional to 20,435.88, 30,637.53 and 18,795.72

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Solution

The fourth proportional to 20,435.88, 30,637.53 and 18,795.72 is: 28,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.88 : 30,637.53 = 18,795.72 : x
  2. Step 2: Convert to fraction form
    20,435.88/30,637.53 = 18,795.72/x
  3. Step 3: Cross multiply
    20,435.88x = 30,637.53 × 18,795.72
  4. Step 4: Simplify right side
    20,435.88x = 575,854,435.37
  5. Step 5: Solve for x
    x = 575,854,435.37/20,435.88
  6. Step 6: Final answer
    x = 28,178.60

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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.