Home / 21,928.86-30,242.70-15,542.82

Finding the Fourth Proportional to 21,928.86, 30,242.70 and 15,542.82

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Solution

The fourth proportional to 21,928.86, 30,242.70 and 15,542.82 is: 21,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.86 : 30,242.70 = 15,542.82 : x
  2. Step 2: Convert to fraction form
    21,928.86/30,242.70 = 15,542.82/x
  3. Step 3: Cross multiply
    21,928.86x = 30,242.70 × 15,542.82
  4. Step 4: Simplify right side
    21,928.86x = 470,056,842.41
  5. Step 5: Solve for x
    x = 470,056,842.41/21,928.86
  6. Step 6: Final answer
    x = 21,435.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.