Home / 10,419.25-15,628.88-3,123.25

Finding the Fourth Proportional to 10,419.25, 15,628.88 and 3,123.25

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Solution

The fourth proportional to 10,419.25, 15,628.88 and 3,123.25 is: 4,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.25 : 15,628.88 = 3,123.25 : x
  2. Step 2: Convert to fraction form
    10,419.25/15,628.88 = 3,123.25/x
  3. Step 3: Cross multiply
    10,419.25x = 15,628.88 × 3,123.25
  4. Step 4: Simplify right side
    10,419.25x = 48,812,883.84
  5. Step 5: Solve for x
    x = 48,812,883.84/10,419.25
  6. Step 6: Final answer
    x = 4,684.88

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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.