Home / 21,777.60-30,010.08-15,472.32

Finding the Fourth Proportional to 21,777.60, 30,010.08 and 15,472.32

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Solution

The fourth proportional to 21,777.60, 30,010.08 and 15,472.32 is: 21,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.60 : 30,010.08 = 15,472.32 : x
  2. Step 2: Convert to fraction form
    21,777.60/30,010.08 = 15,472.32/x
  3. Step 3: Cross multiply
    21,777.60x = 30,010.08 × 15,472.32
  4. Step 4: Simplify right side
    21,777.60x = 464,325,560.99
  5. Step 5: Solve for x
    x = 464,325,560.99/21,777.60
  6. Step 6: Final answer
    x = 21,321.25

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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.