Home / 19,987.75-27,583.10-12,535.75

Finding the Fourth Proportional to 19,987.75, 27,583.10 and 12,535.75

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Solution

The fourth proportional to 19,987.75, 27,583.10 and 12,535.75 is: 17,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.75 : 27,583.10 = 12,535.75 : x
  2. Step 2: Convert to fraction form
    19,987.75/27,583.10 = 12,535.75/x
  3. Step 3: Cross multiply
    19,987.75x = 27,583.10 × 12,535.75
  4. Step 4: Simplify right side
    19,987.75x = 345,774,845.83
  5. Step 5: Solve for x
    x = 345,774,845.83/19,987.75
  6. Step 6: Final answer
    x = 17,299.34

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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.