Home / 28,212.58-42,324.46-12,630.34

Finding the Fourth Proportional to 28,212.58, 42,324.46 and 12,630.34

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Solution

The fourth proportional to 28,212.58, 42,324.46 and 12,630.34 is: 18,948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.58 : 42,324.46 = 12,630.34 : x
  2. Step 2: Convert to fraction form
    28,212.58/42,324.46 = 12,630.34/x
  3. Step 3: Cross multiply
    28,212.58x = 42,324.46 × 12,630.34
  4. Step 4: Simplify right side
    28,212.58x = 534,572,320.12
  5. Step 5: Solve for x
    x = 534,572,320.12/28,212.58
  6. Step 6: Final answer
    x = 18,948.01

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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.