Home / 13,922.28-20,902.14-13,775.40

Finding the Fourth Proportional to 13,922.28, 20,902.14 and 13,775.40

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Solution

The fourth proportional to 13,922.28, 20,902.14 and 13,775.40 is: 20,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.28 : 20,902.14 = 13,775.40 : x
  2. Step 2: Convert to fraction form
    13,922.28/20,902.14 = 13,775.40/x
  3. Step 3: Cross multiply
    13,922.28x = 20,902.14 × 13,775.40
  4. Step 4: Simplify right side
    13,922.28x = 287,935,339.36
  5. Step 5: Solve for x
    x = 287,935,339.36/13,922.28
  6. Step 6: Final answer
    x = 20,681.62

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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.