Home / 15,742.70-21,724.80-9,028.34

Finding the Fourth Proportional to 15,742.70, 21,724.80 and 9,028.34

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Solution

The fourth proportional to 15,742.70, 21,724.80 and 9,028.34 is: 12,459.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.70 : 21,724.80 = 9,028.34 : x
  2. Step 2: Convert to fraction form
    15,742.70/21,724.80 = 9,028.34/x
  3. Step 3: Cross multiply
    15,742.70x = 21,724.80 × 9,028.34
  4. Step 4: Simplify right side
    15,742.70x = 196,138,880.83
  5. Step 5: Solve for x
    x = 196,138,880.83/15,742.70
  6. Step 6: Final answer
    x = 12,459.04

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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.