Home / 28,399.67-39,189.95-15,652.82

Finding the Fourth Proportional to 28,399.67, 39,189.95 and 15,652.82

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Solution

The fourth proportional to 28,399.67, 39,189.95 and 15,652.82 is: 21,600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.67 : 39,189.95 = 15,652.82 : x
  2. Step 2: Convert to fraction form
    28,399.67/39,189.95 = 15,652.82/x
  3. Step 3: Cross multiply
    28,399.67x = 39,189.95 × 15,652.82
  4. Step 4: Simplify right side
    28,399.67x = 613,432,958.95
  5. Step 5: Solve for x
    x = 613,432,958.95/28,399.67
  6. Step 6: Final answer
    x = 21,600.01

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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.