Home / 18,428.17-25,410.78-12,449.46

Finding the Fourth Proportional to 18,428.17, 25,410.78 and 12,449.46

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Solution

The fourth proportional to 18,428.17, 25,410.78 and 12,449.46 is: 17,166.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.17 : 25,410.78 = 12,449.46 : x
  2. Step 2: Convert to fraction form
    18,428.17/25,410.78 = 12,449.46/x
  3. Step 3: Cross multiply
    18,428.17x = 25,410.78 × 12,449.46
  4. Step 4: Simplify right side
    18,428.17x = 316,350,394.53
  5. Step 5: Solve for x
    x = 316,350,394.53/18,428.17
  6. Step 6: Final answer
    x = 17,166.67

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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.