Home / 28,212.39-42,295.47-14,155.44

Finding the Fourth Proportional to 28,212.39, 42,295.47 and 14,155.44

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Solution

The fourth proportional to 28,212.39, 42,295.47 and 14,155.44 is: 21,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.39 : 42,295.47 = 14,155.44 : x
  2. Step 2: Convert to fraction form
    28,212.39/42,295.47 = 14,155.44/x
  3. Step 3: Cross multiply
    28,212.39x = 42,295.47 × 14,155.44
  4. Step 4: Simplify right side
    28,212.39x = 598,710,987.86
  5. Step 5: Solve for x
    x = 598,710,987.86/28,212.39
  6. Step 6: Final answer
    x = 21,221.56

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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.