Home / 28,292.84-39,021.60-18,222.12

Finding the Fourth Proportional to 28,292.84, 39,021.60 and 18,222.12

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Solution

The fourth proportional to 28,292.84, 39,021.60 and 18,222.12 is: 25,132.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.84 : 39,021.60 = 18,222.12 : x
  2. Step 2: Convert to fraction form
    28,292.84/39,021.60 = 18,222.12/x
  3. Step 3: Cross multiply
    28,292.84x = 39,021.60 × 18,222.12
  4. Step 4: Simplify right side
    28,292.84x = 711,056,277.79
  5. Step 5: Solve for x
    x = 711,056,277.79/28,292.84
  6. Step 6: Final answer
    x = 25,132.02

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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.