Home / 14,428.28-21,634.68-7,405.40

Finding the Fourth Proportional to 14,428.28, 21,634.68 and 7,405.40

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Solution

The fourth proportional to 14,428.28, 21,634.68 and 7,405.40 is: 11,104.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.28 : 21,634.68 = 7,405.40 : x
  2. Step 2: Convert to fraction form
    14,428.28/21,634.68 = 7,405.40/x
  3. Step 3: Cross multiply
    14,428.28x = 21,634.68 × 7,405.40
  4. Step 4: Simplify right side
    14,428.28x = 160,213,459.27
  5. Step 5: Solve for x
    x = 160,213,459.27/14,428.28
  6. Step 6: Final answer
    x = 11,104.13

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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.