Home / 20,819.48-28,735.36-13,264.00

Finding the Fourth Proportional to 20,819.48, 28,735.36 and 13,264.00

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Solution

The fourth proportional to 20,819.48, 28,735.36 and 13,264.00 is: 18,307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.48 : 28,735.36 = 13,264.00 : x
  2. Step 2: Convert to fraction form
    20,819.48/28,735.36 = 13,264.00/x
  3. Step 3: Cross multiply
    20,819.48x = 28,735.36 × 13,264.00
  4. Step 4: Simplify right side
    20,819.48x = 381,145,871.68
  5. Step 5: Solve for x
    x = 381,145,871.68/20,819.48
  6. Step 6: Final answer
    x = 18,307.17

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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.