Home / 15,171.31-20,928.13-9,504.84

Finding the Fourth Proportional to 15,171.31, 20,928.13 and 9,504.84

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Solution

The fourth proportional to 15,171.31, 20,928.13 and 9,504.84 is: 13,111.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.31 : 20,928.13 = 9,504.84 : x
  2. Step 2: Convert to fraction form
    15,171.31/20,928.13 = 9,504.84/x
  3. Step 3: Cross multiply
    15,171.31x = 20,928.13 × 9,504.84
  4. Step 4: Simplify right side
    15,171.31x = 198,918,527.15
  5. Step 5: Solve for x
    x = 198,918,527.15/15,171.31
  6. Step 6: Final answer
    x = 13,111.49

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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.