Home / 13,388.30-19,962.76-13,020.47

Finding the Fourth Proportional to 13,388.30, 19,962.76 and 13,020.47

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Solution

The fourth proportional to 13,388.30, 19,962.76 and 13,020.47 is: 19,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.30 : 19,962.76 = 13,020.47 : x
  2. Step 2: Convert to fraction form
    13,388.30/19,962.76 = 13,020.47/x
  3. Step 3: Cross multiply
    13,388.30x = 19,962.76 × 13,020.47
  4. Step 4: Simplify right side
    13,388.30x = 259,924,520.81
  5. Step 5: Solve for x
    x = 259,924,520.81/13,388.30
  6. Step 6: Final answer
    x = 19,414.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.