Home / 28,512.50-42,771.14-10,505.63

Finding the Fourth Proportional to 28,512.50, 42,771.14 and 10,505.63

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Solution

The fourth proportional to 28,512.50, 42,771.14 and 10,505.63 is: 15,759.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.50 : 42,771.14 = 10,505.63 : x
  2. Step 2: Convert to fraction form
    28,512.50/42,771.14 = 10,505.63/x
  3. Step 3: Cross multiply
    28,512.50x = 42,771.14 × 10,505.63
  4. Step 4: Simplify right side
    28,512.50x = 449,337,505.13
  5. Step 5: Solve for x
    x = 449,337,505.13/28,512.50
  6. Step 6: Final answer
    x = 15,759.32

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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.