Home / 28,431.36-39,225.60-17,251.20

Finding the Fourth Proportional to 28,431.36, 39,225.60 and 17,251.20

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Solution

The fourth proportional to 28,431.36, 39,225.60 and 17,251.20 is: 23,800.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.36 : 39,225.60 = 17,251.20 : x
  2. Step 2: Convert to fraction form
    28,431.36/39,225.60 = 17,251.20/x
  3. Step 3: Cross multiply
    28,431.36x = 39,225.60 × 17,251.20
  4. Step 4: Simplify right side
    28,431.36x = 676,688,670.72
  5. Step 5: Solve for x
    x = 676,688,670.72/28,431.36
  6. Step 6: Final answer
    x = 23,800.78

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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.