Home / 28,579.37-42,885.26-15,431.45

Finding the Fourth Proportional to 28,579.37, 42,885.26 and 15,431.45

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Solution

The fourth proportional to 28,579.37, 42,885.26 and 15,431.45 is: 23,155.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.37 : 42,885.26 = 15,431.45 : x
  2. Step 2: Convert to fraction form
    28,579.37/42,885.26 = 15,431.45/x
  3. Step 3: Cross multiply
    28,579.37x = 42,885.26 × 15,431.45
  4. Step 4: Simplify right side
    28,579.37x = 661,781,453.84
  5. Step 5: Solve for x
    x = 661,781,453.84/28,579.37
  6. Step 6: Final answer
    x = 23,155.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.