Home / 20,417.21-30,637.49-7,935.60

Finding the Fourth Proportional to 20,417.21, 30,637.49 and 7,935.60

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Solution

The fourth proportional to 20,417.21, 30,637.49 and 7,935.60 is: 11,907.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.21 : 30,637.49 = 7,935.60 : x
  2. Step 2: Convert to fraction form
    20,417.21/30,637.49 = 7,935.60/x
  3. Step 3: Cross multiply
    20,417.21x = 30,637.49 × 7,935.60
  4. Step 4: Simplify right side
    20,417.21x = 243,126,825.97
  5. Step 5: Solve for x
    x = 243,126,825.97/20,417.21
  6. Step 6: Final answer
    x = 11,907.94

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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.