Home / 13,421.60-18,522.28-7,453.38

Finding the Fourth Proportional to 13,421.60, 18,522.28 and 7,453.38

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Solution

The fourth proportional to 13,421.60, 18,522.28 and 7,453.38 is: 10,285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.60 : 18,522.28 = 7,453.38 : x
  2. Step 2: Convert to fraction form
    13,421.60/18,522.28 = 7,453.38/x
  3. Step 3: Cross multiply
    13,421.60x = 18,522.28 × 7,453.38
  4. Step 4: Simplify right side
    13,421.60x = 138,053,591.31
  5. Step 5: Solve for x
    x = 138,053,591.31/13,421.60
  6. Step 6: Final answer
    x = 10,285.93

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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.