Home / 15,600.03-21,515.79-13,809.39

Finding the Fourth Proportional to 15,600.03, 21,515.79 and 13,809.39

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Solution

The fourth proportional to 15,600.03, 21,515.79 and 13,809.39 is: 19,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,600.03 : 21,515.79 = 13,809.39 : x
  2. Step 2: Convert to fraction form
    15,600.03/21,515.79 = 13,809.39/x
  3. Step 3: Cross multiply
    15,600.03x = 21,515.79 × 13,809.39
  4. Step 4: Simplify right side
    15,600.03x = 297,119,935.27
  5. Step 5: Solve for x
    x = 297,119,935.27/15,600.03
  6. Step 6: Final answer
    x = 19,046.11

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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.