Home / 28,513.50-42,732.54-20,642.34

Finding the Fourth Proportional to 28,513.50, 42,732.54 and 20,642.34

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Solution

The fourth proportional to 28,513.50, 42,732.54 and 20,642.34 is: 30,936.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.50 : 42,732.54 = 20,642.34 : x
  2. Step 2: Convert to fraction form
    28,513.50/42,732.54 = 20,642.34/x
  3. Step 3: Cross multiply
    28,513.50x = 42,732.54 × 20,642.34
  4. Step 4: Simplify right side
    28,513.50x = 882,099,619.74
  5. Step 5: Solve for x
    x = 882,099,619.74/28,513.50
  6. Step 6: Final answer
    x = 30,936.21

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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.