Home / 13,421.35-18,521.94-7,453.11

Finding the Fourth Proportional to 13,421.35, 18,521.94 and 7,453.11

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Solution

The fourth proportional to 13,421.35, 18,521.94 and 7,453.11 is: 10,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.35 : 18,521.94 = 7,453.11 : x
  2. Step 2: Convert to fraction form
    13,421.35/18,521.94 = 7,453.11/x
  3. Step 3: Cross multiply
    13,421.35x = 18,521.94 × 7,453.11
  4. Step 4: Simplify right side
    13,421.35x = 138,046,056.23
  5. Step 5: Solve for x
    x = 138,046,056.23/13,421.35
  6. Step 6: Final answer
    x = 10,285.56

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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.