Home / 28,422.96-39,222.79-15,501.75

Finding the Fourth Proportional to 28,422.96, 39,222.79 and 15,501.75

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Solution

The fourth proportional to 28,422.96, 39,222.79 and 15,501.75 is: 21,391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.96 : 39,222.79 = 15,501.75 : x
  2. Step 2: Convert to fraction form
    28,422.96/39,222.79 = 15,501.75/x
  3. Step 3: Cross multiply
    28,422.96x = 39,222.79 × 15,501.75
  4. Step 4: Simplify right side
    28,422.96x = 608,021,884.88
  5. Step 5: Solve for x
    x = 608,021,884.88/28,422.96
  6. Step 6: Final answer
    x = 21,391.93

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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.