Home / 13,965.78-20,948.70-13,265.04

Finding the Fourth Proportional to 13,965.78, 20,948.70 and 13,265.04

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Solution

The fourth proportional to 13,965.78, 20,948.70 and 13,265.04 is: 19,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.78 : 20,948.70 = 13,265.04 : x
  2. Step 2: Convert to fraction form
    13,965.78/20,948.70 = 13,265.04/x
  3. Step 3: Cross multiply
    13,965.78x = 20,948.70 × 13,265.04
  4. Step 4: Simplify right side
    13,965.78x = 277,885,343.45
  5. Step 5: Solve for x
    x = 277,885,343.45/13,965.78
  6. Step 6: Final answer
    x = 19,897.59

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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.