Home / 15,405.28-21,259.46-8,331.84

Finding the Fourth Proportional to 15,405.28, 21,259.46 and 8,331.84

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Solution

The fourth proportional to 15,405.28, 21,259.46 and 8,331.84 is: 11,498.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.28 : 21,259.46 = 8,331.84 : x
  2. Step 2: Convert to fraction form
    15,405.28/21,259.46 = 8,331.84/x
  3. Step 3: Cross multiply
    15,405.28x = 21,259.46 × 8,331.84
  4. Step 4: Simplify right side
    15,405.28x = 177,130,419.21
  5. Step 5: Solve for x
    x = 177,130,419.21/15,405.28
  6. Step 6: Final answer
    x = 11,498.03

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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.