Home / 28,403.12-39,190.02-18,965

Finding the Fourth Proportional to 28,403.12, 39,190.02 and 18,965

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Solution

The fourth proportional to 28,403.12, 39,190.02 and 18,965 is: 26,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.12 : 39,190.02 = 18,965 : x
  2. Step 2: Convert to fraction form
    28,403.12/39,190.02 = 18,965/x
  3. Step 3: Cross multiply
    28,403.12x = 39,190.02 × 18,965
  4. Step 4: Simplify right side
    28,403.12x = 743,238,729.30
  5. Step 5: Solve for x
    x = 743,238,729.30/28,403.12
  6. Step 6: Final answer
    x = 26,167.50

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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.